7. What is the current in a circuit if 15 coulombs of electric charge move past a given point in 3 seconds? (1) 5 A (3) 18 A (2) 12 A (4) 45 A


 Pierce Goodwin
 3 years ago
 Views:
Transcription
1 1. Compared to the number of free electrons in a conductor, the number of free electrons in an insulator of the same volume is less the same greater 2. Most metals are good electrical conductors because their molecules are close together they have high melting points they have many intermolecular spaces through which the current can flow they have a large number of free electrons 3. If an insulator replaces a conductor in an electrical circuit, the flow of electrons in the circuit will be less the same greater 4. When the total resistance of a simple electrical circuit is decreased while keeping the voltage constant, the current in the electrical circuit will decrease remain the same increase 5. If the resistance of a circuit is doubled and the voltage remains unchanged, the current flowing in the circuit will be onehalf as much onefourth as much twice as much four times as much 6. As the value of a variable resistor is increased, while voltage is held constant, the current flow in the resistor will decrease remain the same increase 7. What is the current in a circuit if 15 coulombs of electric charge move past a given point in 3 seconds? 5 A 18 A 12 A 45 A 8. An ampere can be defined as one coulomb per second joule per coulomb ohm per volt Newton per coulomb 9. A wire carries a current of 2.0 amperes. How many electrons pass a given point in this wire in 1.0 second? The current traveling from the cathode to the screen in a television picture tube is ampere. How many electrons strike the screen in 5.0 seconds? A uniform copper wire has a resistance of 100 ohms. If the wire is cut into 10 equal lengths, the resistance of each piece will be 1 Ω 100 Ω 10 Ω 1,000 Ω 12. A piece of wire has a resistance of 8 ohms. A second piece of wire of the same composition, diameter, and temperature, but onehalf as long as the first wire, has a resistance of 8 Ω 16 Ω 2 Ω 4 Ω 13. If the length of a copper wire is reduced by half, then the resistance of the wire will be halved quartered doubled quadrupled
2 14. A copper wire is part of a complete circuit through which current flows. Which graph best represents the relationship between the wire's length and its resistance? 15. A manufacturer recommends that the longer the extension cord used with an electric drill, the thicker (heavier gauge) the extension cord should be. This recommendation is made because the resistance of a wire varies directly with length and inversely with crosssectional area inversely with length and directly with crosssectional area directly with both length and crosssectional area inversely with both length and crosssectional area 16. A copper wire of length L and crosssectional area A has resistance R. A second copper wire at the same temperature has a length of 2L and a crosssectional area of 1 2A. What is the resistance of the second copper wire? R 2R 1 R 2 4R 17. To reduce the resistance of a metal conductor one should cool the conductor to a low temperature heat the conductor to a high temperature coat the conductor with an insulator wire the conductor in series with another resistor 18. As the temperature of a coil of copper wire increases, its electrical resistance decreases remains the same increases 19. When an incandescent light bulb is turned on, its thin wire filament heats up quickly. As the temperature of this wire filament increases, its electrical resistance decreases remains the same increases 20. The resistance of a copper wire is measured to be 4 ohms at 20ºC. If the wire is heated to 30ºC, the resistance of the wire will be zero ohms more than 4 ohms less than 4 ohms 4 ohms
3 21. The graph below shows the relationship between the potential difference across a metallic conductor and the electric current through the conductor at constant temperature T 1. Which graph best represents the relationship between potential difference and current for the same conductor maintained at a higher constant temperature, T 2? 22. The diagram below represents a lamp, a 10volt battery, and a length of nichrome wire connected in series. 23. If the crosssectional area of a fixed length of wire were decreased, the resistance of the wire would decrease remain the same increase 24. The resistance of a metallic wire conductor is inversely proportional to its tensile strength length crosssectional area temperature As the temperature of the nichrome is decreased, the brightness of the lamp will decrease remain the same increase 25. A copper wire has a resistance of 200 ohms. A second copper wire with twice the crosssectional area and the same length would have a resistance of 50Ω 200Ω 100Ω 400Ω
4 26. Which graph below best represents how the resistance (R) of a series of copper wires of uniform length and temperature varies with crosssectional area (A)? 29. If both the crosssectional area and the length of a metallic conductor were doubled, the resistance of the conductor would be halved unchanged doubled quadrupled 30. The graph below represents the relationship between potential difference and current for four different resistors. Which resistor has the greatest resistance? 27. The diagram below shows a circuit in which a copper wire connects points A and B. A C B D The electrical resistance between points A and B can be decreased by replacing the wire with a thicker copper wire of the same length replacing the wire with a longer copper wire of the same thickness increasing the temperature of the copper wire increasing the potential difference supplied by the battery 31. A student needs to increase the resistance in a circuit. All that is available for this task is a wide variety of wires of different lengths and thicknesses. To obtain the maximum resistance, the student should replace the wire with one that is shortest and thickest longest and thickest shortest and thinnest longest and thinnest 32. A 10.meter length of wire with a crosssectional area of square meter has a resistance of ohm at 20 Celsius. The wire is most likely made of silver aluminum copper tungsten 28. Which segment of copper wire has the highest resistance at room temperature? 1.0 m length, m 2 crosssectional area 2.0 m length, m 2 crosssectional area 1.0 m length, m 2 crosssectional area 2.0 m length, m 2 crosssectional area
5 33. The table below lists various characteristics of two metallic wires, A and B. If wire A has resistance R, then wire B has resistance R 2R R 2 4R 34. Which voltage would cause a current of 0.5 ampere in a circuit that has a resistance of 24 ohms? 6.0 V 24 V 12 V 48 V 35. If the potential difference across a 30.ohm resistor is 10. volts, what is the current through the resistor? 0.25 A 3.0 A 0.33 A 0.50 A 36. A lamp has a current of 2.0 amperes at 6.0 volts. The resistance of the lamp must be 1.5 Ω 3.0 Ω 6.0 Ω 12 Ω 40. In a flashlight, a battery provides a total of 3.0 volts to a bulb. If the flashlight bulb has an operating resistance of 5.0 ohms, the current through the bulb is 0.30 A 1.5 A 0.60 A 1.7 A 41. A 50watt lightbulb and a 100watt lightbulb are each operated at 100 volts. Compared to the resistance of the 50 watt bulb, the resistance of the 100watt bulb is half as great onefourth as great twice as great four times as great 42. The diagram below represents a simple circuit consisting of a variable resistor, a battery, an ammeter, and a voltmeter. 37. A potential difference of 12 volts is applied across a circuit which has a 4.0ohm resistance. What is the magnitude of the current in the circuit? 0.33 A 3.0 A 48 A 4.0 A 38. A series circuit has a total resistance of ohms and an applied potential difference of volts. The amount of charge passing any point in the circuit in 2.00 seconds is C C 2.00 C 4.00 C 39. A 20.ohm resistor has 40. coulombs passing through it in 5.0 seconds. The potential difference across the resistor is 8.0 V 160 V 100 V 200 V What is the effect of increasing the resistance of the variable resistor from 1000 Þ to Þ? [Assume constant temperature.] The ammeter reading decreases. The ammeter reading increases. The voltmeter reading decreases. The voltmeter reading increases.
6 43. Which graph best represents the relationship between the current (I) and the potential difference (V) in a circuit in which resistance remains constant? 46. Which circuit segment has an equivalent resistance of 6 ohms? 47. The diagram below shows a circuit with three resistors. 44. The slope of the line on the graph at the right represents resistance of a material electric field intensity power dissipated in a resistor electrical energy 45. The graph below represents the relationship between the potential difference (V) across a resistor and the current (I) through the resistor. Through which entire interval does the resistor obey Ohm s law? AB CD BC AD What is the resistance of resistor R 3? 6.0 Ω 12 Ω 2.0 Ω 4.0 Ω 48. A student needs a 4ohm resistor to complete a circuit. Only a large quantity of 1ohm resistors are available. Which of the following should be done to complete the circuit? Connect four 1ohm resistors in series. Connect four 1ohm resistors in parallel. Connect two of the 1ohm resistors in series and two in parallel. Connect only two 1ohm resistors in parallel. 49. Which quantity must be the same for each component in any series circuit? voltage resistance power current 50. A 5ohm and a 10ohm resistor are connected in series. The current in the 5ohm resistor is 2 amperes. The current in the 10ohm resistor is 1 A 0.5 A 2 A 8 A
7 51. The diagram below represents a series circuit containing three resistors. 54. A 9.0volt battery is connected to a 4.0ohm resistor and a 5.0ohm resistor as shown in the diagram below. What is the current through resistor R 2? 1.0 A 3.0 A 0.33 A 9.0 A 52. The diagram below represents a simple electric circuit. What is the current in the 5.0ohm resistor? 1.0 A 1.8 A 2.3 A 4.0 A 55. The diagram below represents an electric circuit. How much charge passes through the resistor in 2.0 seconds? 6.0 C 8.0 C 2.0 C 4.0 C 53. A 30.ohm resistor and a 60.ohm resistor are connected in an electric circuit as shown below. If the voltage between A and B is 10 volts, the voltage between B and C is 5 V 15 V 10 V 20 V 56. Three resistors of 20. ohms, 30. ohms, and 60. ohms, respectively, are connected in series with a battery. A current of 2.0 amperes will flow through this circuit when the potential difference of the battery is 10. V 110 V 20. V 220 V 57. As more resistors are added in series across a battery, the potential drop across each resistor decreases remains the same increases Compared to the electric current through the 30.ohm resistor, the electric current through the 60.ohm resistor is smaller the same larger
8 58. The diagram below shows a circuit with two resistors. 61. In the circuit shown below, voltmeter V 2 reads 80. volts. Compared to the potential drop across the 8ohm resistor, the potential drop across the 4ohm resistor is the same onehalf as great twice as great four times as great 59. What is the voltage of the power supply shown on the below? What is the reading of voltmeter V 1? 160 V 40. V 80. V 20. V 62. Compared to the potential drop across the 10 ohm resistor shown in the diagram, the potential drop across the 5 ohm resistor is the same onehalf as great twice as great four times as great 63. What is the current in the circuit represented in the diagram below? 0.5 volt 15 volts 10 volts 50 volts 60. The diagram below shows three resistors, R 1, R 2, and R 3, connected to a 12volt battery. 1 A 3 A 2 A 6 A 64. In the circuit shown below, how many coulombs of charge will pass through resistor R in 2.0 seconds? If voltmeter V 1 reads 3 volts and voltmeter V 2 reads 4 volts, what is the potential drop across resistor R 3? 12 V 0 V 5 V 4 V 36 C 3.0 C 6.0 C 4.0 C
9 65. The diagram below shows a circuit with two resistors. 68. A 6.0ohm lamp requires 0.25 ampere of current to operate. In which circuit below would the lamp operate correctly when switch S is closed? What is the reading on ammeter A? 1.3 A 3.0 A 1.5 A 0.75 A 66. The diagram below represents an electric circuit consisting of a 12volt battery, a 3.0ohm resistor, R 1, and a variable resistor, R 2. At what value must the variable resistor be set to produce a current of 1.0 ampere through R 1? 6.0 Þ 3.0 Þ 9.0 Þ 12 Þ 67. In the circuit represented by the diagram below, what is the reading of voltmeter V? V 30. V 2.0 V 40. V In the circuit diagram above, what is the potential difference across the 3.0ohm resistor? 1.0 V 3.0 V 2.0 V 1.5 V
10 70. In the circuit shown at the right, the potential difference across the 4.0ohm resistor is 73. Which circuit segment below has the same total resistance as the circuit segment shown in the diagram to the right? 6.0 volts 3.0 volts 2.0 volts 12 volts 71. Two identical resistors connected in series have a combined resistance of 8 ohms. When connected in parallel, the resistance of the combination will be 8 Ω 16 Ω 2 Ω 4 Ω 72. Three resistances of 2 ohms, 4 ohms, and 6 ohms are connected in parallel. The equivalent resistance of the three resistors is less than 2 Ω between 4 Ω and 6 Ω between 2 Ω and 4 Ω greater than 6 Ω 74. Circuit A and circuit B are shown below. Compared to the total resistance of circuit A, the total resistance of circuit B is less the same greater
11 75. Which two of the resistor arrangements shown below have equal resistances? 77. Which diagram represents resistances connected in series? A and B C and D B and C D and A 76. The total resistance of several resistors connected in parallel is equal to the sum of the separate resistances equal to the largest resistance smaller than the smallest resistance greater than the largest resistance 78. As more resistors are added in parallel, the total resistance of a circuit decreases remains the same increases 79. The diagram below shows a resistor of 5 ohms and a resistor of 10 ohms connected in parallel in a circuit. What is the total resistance of the circuit? less than 5 ohms 15 ohms 5 ohms greater than 15 ohms
12 80. Resistors R 1 and R 2 have an equivalent resistance of 6 ohms when connected in the circuit shown below. The resistance of R 1 could be 1 Ω 8 Ω 5 Ω 4 Ω 81. A physics student is given three 12ohm resistors with instructions to create the circuit that would have the lowest possible resistance. The correct circuit would be a series circuit with an equivalent resistance of 36 Þ? series circuit with an equivalent resistance of 4.0 Þ? parallel circuit with an equivalent resistance of 36 Þ? parallel circuit with an equivalent resistance of 4.0 Þ? 82. In which circuit would ammeter A show the greatest current? 83. Two identical resistors connected in series have an equivalent resistance of 4 ohms. The same two resistors, when connected in parallel, have an equivalent resistance of 1 Þ 8 Þ 2 Þ 4 Þ
13 84. Ammeters A 1, A 2 and A 3 are placed in a circuit as shown below. 87. What is the current in ammeter A in the diagram below? 1 A 3 A 1/3 A 9 A What is the reading on ammeter A 3? 1.0 A 3.0 A 2.0 A 5.0 A 85. In the diagram below of a parallel circuit, ammeter A measures the current supplied by the 110volt source. 88. An electric circuit contains an operating heating element and a lit lamp. Which statement best explains why the lamp remains lit when the heating element is removed from the circuit? The lamp has less resistance than the heating element. The lamp has more resistance than the heating element. The lamp and the heating element were connected in series. The lamp and the heating element were connected in parallel. 89. In the circuit diagram shown below, ammeter A 1 reads 10. amperes. The current measured by ammeter A is 1.0 A 5.5 A 0.10 A 11 A 86. The diagram below represents currents in a segment of an electric circuit. What is the reading of ammeter A 2? 6.0 A 20. A 10. A 4.0 A 90. When three 30ohm resistors are connected in parallel across a 9volt source, the total current is 0.10 A 0.45 A 0.30 A 0.90 A What is the reading of ammeter A? 1 A 3 A 2 A 4 A 91. A 10ohm and a 20ohm resistor are connected in parallel to a constant voltage source. If the current through the 10 ohm resistor is 4 amperes, then the current through the 20 ohm resistor is 1 A 8 A 2 A 4 A
14 92. In the circuit diagram below, ammeter A measures the current supplied by the 10.volt battery. The current measured by ammeter A is 0.13 A 0.50 A 2.0 A 4.0 A 93. In the circuit diagram shown below, what is the current through the 4.0ohm resistor? 96. A student uses a voltmeter to measure the potential difference across a circuit resistor. To obtain a correct reading, the student must connect the voltmeter in parallel with the circuit resistor in series with the circuit resistor before connecting the other circuit components after connecting the other circuit components 97. Which circuit shows the correct use of meters? (Aammeter, Vvoltmeter) 1.0 ampere 3.0 amperes 0.33 ampere 48 amperes 94. As the number of resistors in a parallel circuit is increased, what happens to the equivalent resistance of the circuit and total current in the circuit? Both equivalent resistance and total current decrease. Both equivalent resistance and total current increase. Equivalent resistance decreases and total current increases. Equivalent resistance increases and total current decreases. 95. Which circuit shown below could be used to determine the total current and potential difference of a parallel circuit? 98. In the circuits represented below, the symbol for the ammeter is A and the symbol for the voltmeter is V. Which diagram represents the proper connections for determining the resistance of the circuit?
15 99. What quantities may be directly measured by the arrangement of meters shown in the diagram below? voltage drop across R 2 and current through R 2 current through R 1 and R 2 current through R 1 and voltage drop across R 2 the resistance of R l and R Two resistors are connected to a source of voltage as shown in the diagram below. At which position should an ammeter be placed to measure the current passing only through resistor R 1? Which circuit diagram shows voltmeter V and ammeter A correctly positioned to measure the total potential difference of the circuit and the current through each resistor?
16 102. In which circuit represented below are meters properly connected to measure the current through resistor R 1 and the potential difference across R 2? 106. If energy is used in an electric circuit at the rate of 20 joules per second, then the power supplied to the circuit is 5 watts 25 watts 20 watts 100 watts 107. Two resistors are connected in parallel to a 12volt battery as shown in the diagram. If the current in resistor R is 3.0 amperes, the rate at which R consumes electrical energy is W 24 W 36 W 4.0 W 108. A lamp and an ammeter are connected to a source as shown A 120volt toaster is rated at 600 watts. Under normal conditions, the current in the toaster is 0.20 A 10. A 5.0 A 25 A 104. Which combination of current and electromotive force would use energy at the greatest rate? 10 A at 110 V 3 A at 220 V 8 A at 110 V 5 A at 110 V 105. Three resistors of 10 ohms, 20 ohms, and 30 ohms are connected in series to a 120volt source. The power developed is greatest in the 10 Ω greatest in the 20 Ω resistor greatest in the 30 Ω resistor the same in all three resistors What is the electrical energy expended in the lamp in 3.0 seconds? 50. J 50. W 150 J 150 W 109. To increase the brightness of a desk lamp, a student replaces a 60watt light bulb with a 100watt bulb. Compared to the 60watt bulb, the 100watt bulb has less resistance and draws more current less resistance and draws less current more resistance and draws more current more resistance and draws less current 110. If the potential drop across an operating 300.watt floodlight is 120 volts, what is the current through the floodlight? 0.40 A 7.5 A 2.5 A 4.5 A
17 111. In which of the circuits represented below will the resistor consume the most electrical power? 117. The same potential difference is applied to two lamps, A and B. The resistance of lamp A is twice the resistance of lamp B. Compared to the power developed by lamp B, the power developed by lamp A is less the same greater 118. While operating at 120 volts, an electric toaster has a resistance of 15 ohms. The power used by the toaster is 8.0 W 960 W 120 W 1,800 W 112. An air conditioner is designed to operate at 110 volts and is rated at 2,400 watts. Is it possible to use the air conditioner in a circuit which has a 15ampere circuit breaker (or fuse) on a 110volt line? Yes, because the current needed is less than 15 amperes. No, because the voltage required is too high. Yes, because the voltage is lower than that needed. No, because the current needed is greater than 15 amperes As the potential difference across a given resistor is increased, the power expended in moving charge through the resistor decreases remains the same increases 119. As the resistance of a lamp operating at a constant voltage increases, the power dissipated by the lamp decreases remains the same increases 120. As the resistance of a constantvoltage circuit is increased, the power developed in the circuit decreases remains the same increases 121. The heating element on an electric stove dissipates watts of power when connected to a 120volt source. What is the electrical resistance of this heating element? Ω 3.3 Ω 0.60 Ω 36 Ω 122. The potential difference applied to a circuit element remains constant as the resistance of the element is varied. Which graph best represents the relationship between power (P) and resistance (R) of this element? 114. One watt is equivalent to one N m J s N/m J/s 115. A light bulb is in series with a rheostat variable resistor and a fixed voltage is applied across the total circuit. As the resistance of the rheostat decreases, the brightness of the bulb decreases remains the same increases 116. The potential difference across a 100.ohm resistor is 4.0 volts. What is the power dissipated in the resistor? 0.16 W W 25 W 4.0 W
18 123. Identical resistors (R) are connected across the same 12volt battery. Which circuit uses the greatest power? 127. How long must a 100watt light bulb be used in order to dissipate 1,000 joules of electrical energy? 10 s 1,000 s 100 s 100,000 s 128. What is the current in a 1,200watt heater operating on 120 volts? 0.10 A 10. A 5.0 A 20. A If the potential difference applied to a fixed resistance is doubled, the power dissipated by that resistance remains the same halves doubles quadruples 125. Assuming total conversion of electrical energy to heat energy, how many joules of heat energy are produced by a 20watt heating unit in 5 seconds? 100 J 24 J 25 J 4 J 126. A series circuit contains a 4W and a 2W resistor connected to a 110volt source. Compared to the energy dissipated in the 2W resistor, the energy dissipated in the 4W resistor during the same time is onehalf as great twice as great the same four times as great The circuit represented in the diagram above is a series circuit. The electrical energy expended in resistor R in 2.0 seconds is 20. J 80. J 40. J 120 J 130. If the power developed in an electric circuit is doubled, the energy used in one second is halved quartered doubled quadrupled 131. An electric iron draws a current of 5 amperes and has a resistance of 20 ohms. The amount of energy used by the iron in 40 seconds is 100 J 4,000 J 500 J 20,000 J 132. A clothes dryer connected to a 240volt line draws 30. amperes of current for 20. minutes. Approximately how much electrical energy is consumed by the dryer? J J J J 133. An electric dryer consumes 6.0 x 10 6 joules of energy when operating at 220 volts for 30. minutes. During operation, the dryer draws a current of approximately 10. A 20. A 15 A 25 A
19 134. How long will it take the immersion heater shown in the diagram below to deliver 1000 joules of heat to the water? 137. A 4.50volt personal stereo uses 1950 joules of electrical energy in one hour. What is the electrical resistance of the personal stereo? 433 Ohms 37.4 Ohms 96.3 Ohms Ohms 138. How much work is done in moving 6 electrons through a potential difference of 2.0 volts? 6.0 ev 3.0 ev 2.0 ev 12 ev 0.2 sec 20 sec 2 sec 200 sec 135. How much time is required for an operating 100watt light bulb to dissipate 10 joules of electrical energy? 1 s 10 s 0.1 s 1000 s 136. An operating electric heater draws a current of 10. amperes and has a resistance of 12 ohms. How much energy does the heater use in 60. seconds? 120 J 7200 J 1200 J 72,000 J 139. An elementary charge is accelerated by a potential difference of 9.0 volts. The total energy acquired by the charge is 9.0 ev 3.0 ev 12 ev 27 ev 140. An alpha particle with a charge of +2 elementary charges is accelerated in a vacuum through a potential difference of 10,000. volts. what is the energy acquired by the particle? ev 20,000. ev 2.0 ev 40,000. ev 141. An alpha particle with a charge of +2 elementary charges is accelerated by a potential difference of volts. The energy acquired by the particle is ev ev ev is ev
20 Answer Key Misc. UserMade Questions [Aug 10, 2009]
21 Answer Key Misc. UserMade Questions [Aug 10, 2009]
22 Answer Key Misc. UserMade Questions [Aug 10, 2009]
Chapter 13: Electric Circuits
Chapter 13: Electric Circuits 1. A household circuit rated at 120 Volts is protected by a fuse rated at 15 amps. What is the maximum number of 100 watt light bulbs which can be lit simultaneously in parallel
More informationObjectives 200 CHAPTER 4 RESISTANCE
Objectives Explain the differences among conductors, insulators, and semiconductors. Define electrical resistance. Solve problems using resistance, voltage, and current. Describe a material that obeys
More informationOhm's Law and Circuits
2. Conductance, Insulators and Resistance A. A conductor in electricity is a material that allows electrons to flow through it easily. Metals, in general, are good conductors. Why? The property of conductance
More information1. The diagram below represents magnetic lines of force within a region of space.
1. The diagram below represents magnetic lines of force within a region of space. 4. In which diagram below is the magnetic flux density at point P greatest? (1) (3) (2) (4) The magnetic field is strongest
More informationAP1 Electricity. 1. A student wearing shoes stands on a tile floor. The students shoes do not fall into the tile floor due to
1. A student wearing shoes stands on a tile floor. The students shoes do not fall into the tile floor due to (A) a force of repulsion between the shoes and the floor due to macroscopic gravitational forces.
More informationSeries and Parallel Circuits
Series and Parallel Circuits Components in a circuit can be connected in series or parallel. A series arrangement of components is where they are inline with each other, i.e. connected endtoend. A parallel
More informationCircuit symbol. Each of the cells has a potential difference of 1.5 volts. Figure 1. Use the correct answer from the box to complete the sentence.
Q.(a) Draw one line from each circuit symbol to its correct name. Circuit symbol Name Diode Lightdependent resistor (LDR) Lamp Lightemitting diode (LED) (3) Figure shows three circuits. The resistors
More informationAP Physics Electricity and Magnetism #4 Electrical Circuits, Kirchoff s Rules
Name Period AP Physics Electricity and Magnetism #4 Electrical Circuits, Kirchoff s Rules Dr. Campbell 1. Four 240 Ω light bulbs are connected in series. What is the total resistance of the circuit? What
More informationPHYSICS 111 LABORATORY Experiment #3 Current, Voltage and Resistance in Series and Parallel Circuits
PHYSCS 111 LABORATORY Experiment #3 Current, Voltage and Resistance in Series and Parallel Circuits This experiment is designed to investigate the relationship between current and potential in simple series
More informationElectrical Fundamentals Module 3: Parallel Circuits
Electrical Fundamentals Module 3: Parallel Circuits PREPARED BY IAT Curriculum Unit August 2008 Institute of Applied Technology, 2008 ATE310 Electrical Fundamentals 2 Module 3 Parallel Circuits Module
More informationPeople s Physics Book
The Big Ideas: The name electric current is given to the phenomenon that occurs when an electric field moves down a wire at close to the speed of light. Voltage is the electrical energy density (energy
More informationVoltage Drop (SinglePhase)
Voltage Drop (SinglePhase) To Find: To Find Voltage Drop Formula: 2 x K x L x I V.D. =  C.M. Variables: C.M. = Circular Mill Area (Chapter 9, Table 8) To Find Voltage Drop Percentage
More informationExperiment #3, Ohm s Law
Experiment #3, Ohm s Law 1 Purpose Physics 182  Summer 2013  Experiment #3 1 To investigate the oltage, , characteristics of a carbon resistor at room temperature and at liquid nitrogen temperature,
More information101 BASICS SERIES LEARNING MODULE 2: FUNDAMENTALS OF ELECTRICITY. CutlerHammer
101 BASICS SERIES LEARNING MODULE 2: FUNDAMENTALS OF ELECTRICITY CutlerHammer WELCOME Welcome to Module 2, Fundamentals of Electricity. This module will cover the fundamentals of electricity in a practical
More informationStudent Exploration: Circuits
Name: Date: Student Exploration: Circuits Vocabulary: ammeter, circuit, current, ohmmeter, Ohm s law, parallel circuit, resistance, resistor, series circuit, voltage Prior Knowledge Questions (Do these
More information3. What atom s particle moves through a conductor material? 4. Which are the electric components of an elemental electric circuit?
1. What is electricity? 2. Write down the name of the atom s particles. 3. What atom s particle moves through a conductor material? 4. Which are the electric components of an elemental electric circuit?
More informationElectric Potential Difference
Name: Electric Potential Difference Read from Lesson 1 of the Current Electricity chapter at The Physics Classroom: http://www.physicsclassroom.com/class/circuits/u9l1a.html http://www.physicsclassroom.com/class/circuits/u9l1b.html
More informationELECTRICAL FUNDAMENTALS
General Electricity is a form of energy called electrical energy. It is sometimes called an "unseen" force because the energy itself cannot be seen, heard, touched, or smelled. However, the effects of
More informationSTUDY MATERIAL FOR CLASS 10+2  Physics CURRENT ELECTRICITY. The flow of electric charges in a particular direction constitutes electric current.
Chapter : 3 Current Electricity Current Electricity The branch of Physics which deals with the study of electric charges in motion is called current electricity. Electric current The flow of electric charges
More informationThe Electrical Properties of Materials: Resistivity
The Electrical Properties of Materials: Resistivity 1 Objectives 1. To understand the properties of resistance and resistivity in conductors, 2. To measure the resistivity and temperature coefficient of
More informationResistance, Ohm s Law, and the Temperature of a Light Bulb Filament
Resistance, Ohm s Law, and the Temperature of a Light Bulb Filament Name Partner Date Introduction Carbon resistors are the kind typically used in wiring circuits. They are made from a small cylinder of
More informationPS6.2 Explain the factors that determine potential and kinetic energy and the transformation of one to the other.
PS6.1 Explain how the law of conservation of energy applies to the transformation of various forms of energy (including mechanical energy, electrical energy, chemical energy, light energy, sound energy,
More informationIntroduction to Electricity & Magnetism. Dr Lisa JardineWright Cavendish Laboratory
Introduction to Electricity & Magnetism Dr Lisa JardineWright Cavendish Laboratory Examples of uses of electricity Christmas lights Cars Electronic devices Human body Electricity? Electricity is the presence
More informationTemperature coefficient of resistivity
Temperature coefficient of resistivity ρ slope = α ρ = ρ o [ 1+ α(t To )] R = R o [1+ α(t T o )] T T 0 = reference temperature α = temperature coefficient of resistivity, units of (ºC) 1 For Ag, Cu, Au,
More informationSolutions to Bulb questions
Solutions to Bulb questions Note: We did some basic circuits with bulbs in fact three main ones I can think of I have summarized our results below. For the final exam, you must have an understanding of
More informationPHYS 222 Spring 2012 Final Exam. Closed books, notes, etc. No electronic device except a calculator.
PHYS 222 Spring 2012 Final Exam Closed books, notes, etc. No electronic device except a calculator. NAME: (all questions with equal weight) 1. If the distance between two point charges is tripled, the
More informationReview Questions PHYS 2426 Exam 2
Review Questions PHYS 2426 Exam 2 1. If 4.7 x 10 16 electrons pass a particular point in a wire every second, what is the current in the wire? A) 4.7 ma B) 7.5 A C) 2.9 A D) 7.5 ma E) 0.29 A Ans: D 2.
More informationELECTRICAL CIRCUITS. Electrical Circuits
Electrical Circuits A complete path, or circuit, is needed before voltage can cause a current flow through resistances to perform work. There are several types of circuits, but all require the same basic
More informationResistors in Series and Parallel
Resistors in Series and Parallel Bởi: OpenStaxCollege Most circuits have more than one component, called a resistor that limits the flow of charge in the circuit. A measure of this limit on charge flow
More informationSection B: Electricity
Section B: Electricity We use mains electricity, supplied by power stations, for all kinds of appliances in our homes, so it is very important to know how to use it safely. In this chapter you will learn
More informationCLASS TEST GRADE 11. PHYSICAL SCIENCES: PHYSICS Test 3: Electricity and magnetism
CLASS TEST GRADE 11 PHYSICAL SCIENCES: PHYSICS Test 3: Electricity and magnetism MARKS: 45 TIME: 1 hour INSTRUCTIONS AND INFORMATION 1. Answer ALL the questions. 2. You may use nonprogrammable calculators.
More informationCurrent, Resistance and Electromotive Force. Young and Freedman Chapter 25
Current, Resistance and Electromotive Force Young and Freedman Chapter 25 Electric Current: Analogy, water flowing in a pipe H 2 0 gallons/minute Flow Rate is the NET amount of water passing through a
More informationWhich Bulb Burns Brighter? One is a 60watt bulb and the other a 100watt bulb, and they are connected in an electric circuit.
Which Bulb Burns Brighter? One is a 60watt bulb and the other a 100watt bulb, and they are connected in an electric circuit. Look at the text on page 541 for the answer. CHPTE 23 Series and Parallel
More informationLab 3  DC Circuits and Ohm s Law
Lab 3 DC Circuits and Ohm s Law L31 Name Date Partners Lab 3  DC Circuits and Ohm s Law OBJECTIES To learn to apply the concept of potential difference (voltage) to explain the action of a battery in
More informationSeries and Parallel Circuits
Direct Current (DC) Direct current (DC) is the unidirectional flow of electric charge. The term DC is used to refer to power systems that use refer to the constant (not changing with time), mean (average)
More informationLecture Notes: ECS 203 Basic Electrical Engineering Semester 1/2010. Dr.Prapun Suksompong 1 June 16, 2010
Sirindhorn International Institute of Technology Thammasat University School of Information, Computer and Communication Technology Lecture Notes: ECS 203 Basic Electrical Engineering Semester 1/2010 Dr.Prapun
More informationDIRECT CURRENT GENERATORS
DIRECT CURRENT GENERATORS Revision 12:50 14 Nov 05 INTRODUCTION A generator is a machine that converts mechanical energy into electrical energy by using the principle of magnetic induction. This principle
More informationJunior Cert Science Numeracy Resources
Focus on Numeracy Junior Cert Science Numeracy Resources Let s Talk About Measurement Measurement of Time Directions: Put a < (less than), > (greater than), or = symbol between the two amounts of time.
More informationSeries and Parallel Resistive Circuits Physics Lab VIII
Series and Parallel Resistive Circuits Physics Lab VIII Objective In the set of experiments, the theoretical expressions used to calculate the total resistance in a combination of resistors will be tested
More informationParallel Circuits. Objectives After studying this chapter, you will be able to answer these questions: 1. How are electrical components connected
This sample chapter is for review purposes only. Copyright The GoodheartWillcox Co., Inc. All rights reserved. Electricity Objectives After studying this chapter, you will be able to answer these questions:.
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If the voltage at a point in space is zero, then the electric field must be A) zero. B) positive.
More informationA Learning Guide for Model Rocket Launch Systems
A Learning Guide for Model Rocket Launch Systems Including: Schematics, Electrical Theory and Study Problems Edited and updated by Ann Grimm EstesEducator.com educator@estesrockets.com 800.820.0202 2012
More informationElectronics. Basic Concepts. Yrd. Doç. Dr. Aytaç GÖREN Yrd. Doç. Dr. Levent ÇETİN
Electronics Basic Concepts Electric charge Ordinary matter is made up of atoms which have positively charged nuclei and negatively charged electrons surrounding them. Charge is quantized as the subtraction
More informationChapter 5. Parallel Circuits ISU EE. C.Y. Lee
Chapter 5 Parallel Circuits Objectives Identify a parallel circuit Determine the voltage across each parallel branch Apply Kirchhoff s current law Determine total parallel resistance Apply Ohm s law in
More informationUnit: Charge Differentiated Task Light it Up!
The following instructional plan is part of a GaDOE collection of Unit Frameworks, Performance Tasks, examples of Student Work, and Teacher Commentary. Many more GaDOE approved instructional plans are
More informationCurrent Electricity Lab Series/Parallel Circuits. Safety and Equipment Precautions!
Current Electricity Lab Series/Parallel Circuits Name Safety and Equipment Precautions! Plug in your power supply and use ONLY the D.C. terminals of the power source, NOT the A. C. terminals. DO NOT touch
More informationExperiment #5, Series and Parallel Circuits, Kirchhoff s Laws
Physics 182 Summer 2013 Experiment #5 1 Experiment #5, Series and Parallel Circuits, Kirchhoff s Laws 1 Purpose Our purpose is to explore and validate Kirchhoff s laws as a way to better understanding
More informationElectrician s Math and Basic Electrical Formulas
UNIT 1 Electrician s Math and Basic Electrical Formulas INTRODUCTION TO UNIT 1 ELECTRICIAN S MATH AND BASIC ELECTRICAL FORMULAS In order to construct a building that will last into the future, a strong
More informationElectrical Resistance Resistance (R)
Electrical Resistance Resistance (R) Any device in a circuit which converts electrical energy into some other form impedes the current. The device which converts electrical energy to heat energy is termed
More informationFig. 1 Analogue Multimeter Fig.2 Digital Multimeter
ELECTRICAL INSTRUMENT AND MEASUREMENT Electrical measuring instruments are devices used to measure electrical quantities such as electric current, voltage, resistance, electrical power and energy. MULTIMETERS
More informationThe University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING PHYSICS. Friday, June 20, 2014 1:15 to 4:15 p.m.
P.S./PHYSICS The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING PHYSICS Friday, June 20, 2014 1:15 to 4:15 p.m., only The possession or use of any communications device
More informationExperiment NO.3 Series and parallel connection
Experiment NO.3 Series and parallel connection Object To study the properties of series and parallel connection. Apparatus 1. DC circuit training system 2. Set of wires. 3. DC Power supply 4. Digital A.V.O.
More informationAircraft Electrical System
Chapter 9 Aircraft Electrical System Introduction The satisfactory performance of any modern aircraft depends to a very great degree on the continuing reliability of electrical systems and subsystems.
More informationElectrical Circuit Theory
Electrical Circuit Theory Learning Objectives: 1. Review the basic electrical concepts of voltage, amperage, and resistance. 2. Review the components of a basic automotive electrical circuit. 3. Introduce
More informationJoule Equivalent of Electrical Energy
by Dr. James E. Parks Department of Physics and Astronomy 401 Nielsen Physics Building The University of Tennessee Knoxville, Tennessee 379961200 Copyright October, 2013 by James Edgar Parks* *All rights
More informationCourse description: Introduces the student to basic electricity with an emphasis on Ohms Law.
The following is presented for information purposes only and comes with no warranty. See http://www.bristolwatch.com/ Course Title: Basic Electricity and Ohms Law Course description: Introduces the student
More informationResistors in Series and Parallel
OpenStaxCNX module: m42356 1 Resistors in Series and Parallel OpenStax College This work is produced by OpenStaxCNX and licensed under the Creative Commons Attribution License 3.0 Abstract Draw a circuit
More informationSeries and Parallel Circuits
Series and Parallel Circuits DirectCurrent Series Circuits A series circuit is a circuit in which the components are connected in a line, one after the other, like railroad cars on a single track. There
More informationParallel DC circuits
Parallel DC circuits This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/,
More informationObjectives. Electric Current
Objectives Define electrical current as a rate. Describe what is measured by ammeters and voltmeters. Explain how to connect an ammeter and a voltmeter in an electrical circuit. Explain why electrons travel
More informationBasic Principles of. Electricity. Basic Principles of Electricity. by Prof. Dr. Osman SEVAİOĞLU Electrical and Electronics Engineering Department
Basic Principles of Electricity METU by Prof. Dr. Osman SEVAİOĞLU Electrical and Electronics Engineering Department EE 209 Fundamentals of Electrical and Electronics Engineering, Prof. Dr. O. SEVAİOĞLU,
More informationOHM S LAW AND RESISTANCE
OHM S LAW AND RESISTANCE Resistance is one of the basic principles of Ohm s law, and can be found in virtually any device used to conduct electricity. Georg Simon Ohm was a German physicist who conducted
More information13.10: How Series and Parallel Circuits Differ pg. 571
13.10: How Series and Parallel Circuits Differ pg. 571 Key Concepts: 5. Connecting loads in series and parallel affects the current, potential difference, and total resistance.  Using your knowledge of
More informationSTUDY GUIDE: ELECTRICITY AND MAGNETISM
319 S. Naperville Road Wheaton, IL 60187 www.questionsgalore.net Phone: (630) 5805735 EMail: info@questionsgalore.net Fax: (630) 5805765 STUDY GUIDE: ELECTRICITY AND MAGNETISM An atom is made of three
More informationWire types and sizes
Wire types and sizes This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/,
More informationVaporization of Liquid Nitrogen
Vaporization of Liquid Nitrogen Goals and Introduction As a system exchanges thermal energy with its surroundings, the temperature of the system will usually increase or decrease, depending on the direction
More informationObjectives. Capacitors 262 CHAPTER 5 ENERGY
Objectives Describe a capacitor. Explain how a capacitor stores energy. Define capacitance. Calculate the electrical energy stored in a capacitor. Describe an inductor. Explain how an inductor stores energy.
More informationExercises on Voltage, Capacitance and Circuits. A d = (8.85 10 12 ) π(0.05)2 = 6.95 10 11 F
Exercises on Voltage, Capacitance and Circuits Exercise 1.1 Instead of buying a capacitor, you decide to make one. Your capacitor consists of two circular metal plates, each with a radius of 5 cm. The
More informationVoltage Loss Formula s
www.litzwire.com HM Wire International Inc. Phone: 3302448501 Fax: 3302448561 Voltage Loss Formula s www.hmwire.com Voltage loss in a wire is synonymous to pressure loss in a pipe. Electric current
More informationVoltage, energy and power in electric circuits. Science teaching unit
Voltage, energy and power in electric circuits Science teaching unit Disclaimer The Department for Children, Schools and Families wishes to make it clear that the Department and its agents accept no responsibility
More informationUnit 4: Electricity (Part 2)
Unit 4: Electricity (Part 2) Learning Outcomes Students should be able to: 1. Explain what is meant by power and state its units 2. Discuss the importance of reducing electrical energy wastage 3. State
More informationExperiment #4, Ohmic Heat
Experiment #4, Ohmic Heat 1 Purpose Physics 18  Fall 013  Experiment #4 1 1. To demonstrate the conversion of the electric energy into heat.. To demonstrate that the rate of heat generation in an electrical
More informationMeasuring Electric Phenomena: the Ammeter and Voltmeter
Measuring Electric Phenomena: the Ammeter and Voltmeter 1 Objectives 1. To understand the use and operation of the Ammeter and Voltmeter in a simple direct current circuit, and 2. To verify Ohm s Law for
More informationTHE BREADBOARD; DC POWER SUPPLY; RESISTANCE OF METERS; NODE VOLTAGES AND EQUIVALENT RESISTANCE; THÉVENIN EQUIVALENT CIRCUIT
THE BREADBOARD; DC POWER SUPPLY; RESISTANCE OF METERS; NODE VOLTAGES AND EQUIVALENT RESISTANCE; THÉVENIN EQUIVALENT CIRCUIT YOUR NAME LAB MEETING TIME Reference: C.W. Alexander and M.N.O Sadiku, Fundamentals
More informationChapter 7 DirectCurrent Circuits
Chapter 7 DirectCurrent Circuits 7. Introduction...77. Electromotive Force...73 7.3 Resistors in Series and in Parallel...75 7.4 Kirchhoff s Circuit Rules...77 7.5 VoltageCurrent Measurements...79
More informationResistors. Some substances are insulators. A battery will not make detectible current flow through them.
Resistors Some substances are insulators. A battery will not make detectible current flow through them. Many substances (lead, iron, graphite, etc.) will let current flow. For most substances that are
More informationConstant Current Electronic Power Supply Load By Jeff K. Steinkamp N7YG April 3, 2012
Constant Current Electronic Power Supply Load By Jeff K. Steinkamp N7YG April 3, 2012 Power supplies, especially external units, have become an ever increasing necessity in today s world of electronic
More informationBUILDING A BASIC CIRCUIT
Teacher Information BUILDING A BASIC CIRCUIT NSES912.2 Physical Science: Interactions of Energy and Matter Adaptations Some adaptations and modifications that may assist a student with visual and/or other
More informationLab 2: Resistance, Current, and Voltage
2 Lab 2: Resistance, Current, and Voltage I. Before you come to la.. A. Read the following chapters from the text (Giancoli): 1. Chapter 25, sections 1, 2, 3, 5 2. Chapter 26, sections 1, 2, 3 B. Read
More informationTable of Contents 1. Introduction 2. Electrical Fundamentals Electron Theory Matter 4 MOLECULE
Table of Contents 1. Introduction 3 2. Electrical Fundamentals 4 Electron Theory 4 Matter 4 MOLECULE 5 The atom 6 Atom construction 7 Electrical charges 11 Balanced atoms 12 Ions 13 Electron orbits 15
More informationChapter 22 Further Electronics
hapter 22 Further Electronics washing machine has a delay on the door opening after a cycle of washing. Part of this circuit is shown below. s the cycle ends, switch S closes. t this stage the capacitor
More informationPhysics. Cambridge IGCSE. Workbook. David Sang. Second edition. 9780521757843 Cambers & Sibley: IGCSE Physics Cover. C M Y K
Cambridge IGCSE Physics, Second edition matches the requirements of the latest Cambridge IGCSE Physics syllabus (0625). It is endorsed by Cambridge International Examinations for use with their examination.
More informationSeriesparallel DC circuits
Seriesparallel DC circuits This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/,
More informationLab E1: Introduction to Circuits
E1.1 Lab E1: Introduction to Circuits The purpose of the this lab is to introduce you to some basic instrumentation used in electrical circuits. You will learn to use a DC power supply, a digital multimeter
More informationElectricity. Introduction. Key concepts of electricity. Static electricity. Current electricity
Electricity Introduction This topic explores the key concepts of electricity as they relate to: static electricity current electricity higher order models of electric circuits household electricity electricity
More informationDET Practical Electronics (Intermediate 1)
DET Practical Electronics (Intermediate 1) 731 August 2000 HIGHER STILL DET Practical Electronics (Intermediate 1) Support Materials CONTENTS Section 1 Learning about Resistors Section 2 Learning about
More informationMethod 1: 30x50 30 50 18.75 15 18.75 0.8. 80 Method 2: 15
The University of New South Wales School of Electrical Engineering and Telecommunications ELEC Electrical and Telecommunications Engineering Tutorial Solutions Q. In the figure below a voltage source and
More information104 Practice Exam 23/21/02
104 Practice Exam 23/21/02 1. Two electrons are located in a region of space where the magnetic field is zero. Electron A is at rest; and electron B is moving westward with a constant velocity. A nonzero
More informationΣ I in = Σ I out E = IR 1 + IR 2 FXA 2008 KIRCHHOFF S LAWS 1. Candidates should be able to : LAW 1 (K1)
UNT G482 Module 3 2.3.1 Series & Parallel Circuits Candidates should be able to : KRCHHOFF S LAWS 1 LAW 1 (K1) State Kirchhoff s second law and appreciate that it is a consequence of conservation of energy.
More informationThe University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING PHYSICS. Wednesday, June 17, 2015 1:15 to 4:15 p.m.
P.S./PHYSICS The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING PHYSICS Wednesday, June 17, 2015 1:15 to 4:15 p.m., only The possession or use of any communications
More informationBranch Circuit Calculations
Branch Circuit Calculations by Gerald Newton October 31, 1999 1. A 20 ampere, 120 volt, 2wire branch circuit has a maximum load capacity of watts or voltamperes. Reference: Using the following for Single
More informationChapter 11. Inductors ISU EE. C.Y. Lee
Chapter 11 Inductors Objectives Describe the basic structure and characteristics of an inductor Discuss various types of inductors Analyze series inductors Analyze parallel inductors Analyze inductive
More informationUnit 3 Electricity Suggested Time: 28 Hours
Unit 3 Electricity Suggested Time: 28 Hours Unit Overview Introduction Focus and Context Science Curriculum Links Technologies based on the principles of electricity are an important part of the student
More informationLight Bulbs in Parallel Circuits
Light Bulbs in Parallel Circuits In the last activity, we analyzed several different series circuits. In a series circuit, there is only one complete pathway for the charge to travel. Here are the basic
More informationG482 Electrons, Waves and Photons; Revision Notes Module 1: Electric Current
G482 Electrons, Waves and Photons; Revision Notes Module 1: Electric Current Electric Current A net flow of charged particles. Electrons in a metal Ions in an electrolyte Conventional Current A model used
More informationOhm s Law. George Simon Ohm
Ohm s Law George Simon Ohm The law which governs most simple and many complex electrical phenomena is known as Ohm s Law. It is the most important law in electricity. In 1827, a German locksmith and mathematician
More informationEnergy, Work, and Power
Energy, Work, and Power This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/,
More informationEXPERIMENT 7 OHM S LAW, RESISTORS IN SERIES AND PARALLEL
260 7 I. THEOY EXPEIMENT 7 OHM S LAW, ESISTOS IN SEIES AND PAALLEL The purposes of this experiment are to test Ohm's Law, to study resistors in series and parallel, and to learn the correct use of ammeters
More informationWires & Connections Component Circuit Symbol Function of Component. Power Supplies Component Circuit Symbol Function of Component
Lista Dei Simboli Dei Circuiti Per i Componenti Elettronici Wires & Connections Wire Wires joined Wires not joined To pass current very easily from one part of a circuit to another. A 'blob' should be
More information