The current that flows is determined by the potential difference across the conductor and the resistance of the conductor (Ohm s law): V = IR P = VI


 Chastity Lyons
 2 years ago
 Views:
Transcription
1 PHYS1000 DC electric circuits 1 Electric circuits Electric current Charge can move freely in a conductor if an electric field is present; the moving charge is an electric current (SI unit is the ampere (A), often shortened to amps). We use the potential difference or voltage across the conductor to characterize the electric field (since V = E x) The current that flows is determined by the potential difference across the conductor and the resistance of the conductor (Ohm s law): The SI unit of resistance is the ohm (Ω). As current flows through a resistance, energy is lost: V = IR P = VI If the current is constant (which also means it doesn t change direction), the current is called a direct current or DC. What is an electric circuit? To maintain a steady electric current, the moving charge needs to be able to return to its starting location a complete circuit must be present. Since energy lost as the charge moves, this energy must be replaced by a power supply. The main ways to produce an electric current are generators using electromagnetic induction, and chemical batteries. The exact type of power supply is not important, how much energy is supplied is. We measure this energy by the potential difference provided by the power supply also called the voltage of the power supply. Note that the potential difference across a resistance is a potential drop, or a reduction in energy. The potential difference across a power supply is a potential rise a gain in energy. For a steady current, if we go around a complete circuit, the total energy supplied is equal to the total energy lost: V supply = V losses Usually, a simple circuit will only contain a single power supply. positive, and all potential drops negative, we can write: If we make all potential rises V = 0 around any closed circuit.
2 PHYS1000 DC electric circuits 2 Circuit diagrams An easy way to describe an electric circuit is with a circuit diagram a drawing showing the circuit. Standard symbols are used for the various components in the circuit, and the conductors (wires) joining them together are drawn as lines. Circuit symbols: power supply A DC power supply can be drawn in a number of different ways (we ll use the one on the left): +9 V + 9 V Resistors If the resistance of a component of an electric circuit is its main electrical property, we can call it a resistor. Why do we want to add resistance to a circuit? A component might perform some useful function, but its main electrical property is resistance we can represent it with a resistor. (For example, a heating element, or a light bulb.) We can use a resistor to control the current in a circuit. Once we put a resistor in a circuit, its resistance is so much larger than the resistance of the wires in the circuit, and we can assume that the resistance of the wires is zero. Circuit symbols: resistor Example: a 1.0 kω resistor connected to a 12 V power supply: 12 V 1.0 kω
3 PHYS1000 DC electric circuits 3 Series & parallel circuits Multiple components in a circuit can either be connected in series with each other R R 1 2 R3 in parallel with each other R 1 R 2 R 3 Series circuits Example: a 1.0 kω and a 2.0 kω resistor connected in series with a 12 V power supply: 12 V 1.0 kω 2.0 kω Note that as the current flows from A to B, power is lost in each resistor, so V AB = V 1 + V 2
4 PHYS1000 DC electric circuits 4 the same current flows through all the resistors the combined resistance of both resistors is I A = I 1 = I 2 = I B R T = R 1 + R 2 Example: a 1.0 kω and a 2.0 kω resistor connected in parallel with a 12 V power supply: 12 V 1.0 kω 2.0 kω Note that all the resistors connect the same two points in the circuit together, so they must all have the same potential difference across them V AB = V 1 = V 2 the current at A splits up to flow through all of the resistors the combined resistance of both resistors is I A = I 1 + I 2 = I B 1 R T = 1 R R 2 Measuring currents and voltages We use ammeters and voltmeters to measure current and potential difference. ammeter The current to be measured must flow through the meter connect in series A
5 PHYS1000 DC electric circuits 5 voltmeter We want to measure the potential difference across two points connect in parallel across these two points V A B A multimeter is a convenient device that can measure either voltage or current (and resistance as well). Capacitors ADVANCED Two parallel plates with positive and negative charges equal in magnitude can be used to store electrical energy. This is called a capacitor. This energy can be used as a power supply in a circuit. The stored energy depends on the charge and the capacitance (measured in farads (F)). Q = CV Since the potential difference between the two plates depends on the charge on the plates, the voltage across the capacitor will fall as current flows from it as the capacitor discharges. How quickly the voltage falls depends on how much current flows, which depends on the resistance in the circuit. V = V 0 exp t/rc where R is the resistance in the circuit and C is the capacitance of the capacitor. The quantity RC is called the time constant, and is usually written as τ. Similarly, it takes time to charge a capacitor: This can be used to measure time in DC circuits. V = V 0 (1 exp t/τ) When the capacitor is fully charged or discharged, no current will flow. Circuit symbols: capacitor
6 PHYS1000 DC electric circuits 6 AC circuits EXTRA Another common type of electric current is alternating current, or AC. In an AC circuit, the current varies sinusoidally, and flows first in one direction, and then the other. If a suitable average voltage and current are used for AC, Ohm s Law can still be used for circuits which only contain resistors.
Tutorial 12 Solutions
PHYS000 Tutorial 2 solutions Tutorial 2 Solutions. Two resistors, of 00 Ω and 200 Ω, are connected in series to a 6.0 V DC power supply. (a) Draw a circuit diagram. 6 V 00 Ω 200 Ω (b) What is the total
More information1) 10. V 2) 20. V 3) 110 V 4) 220 V
1. The diagram below represents an electric circuit consisting of a 12volt battery, a 3.0ohm resistor, R 1, and a variable resistor, R 2. 3. What is the total resistance of the circuit 1) 6.6 Ω 2) 10
More informationPHY 101 Lab 7 on Electric circuits: Direct current circuits Your name: Other team members:
PHY 101 Lab 7 on Electric circuits: Direct current circuits Your name: Other team members: Goals: To explore the basic principles of electric circuits, and how to measure them. Materials: Electrical resistors
More informationKirchhoff s Voltage Law and RC Circuits
Kirchhoff s oltage Law and RC Circuits Apparatus 2 1.5 batteries 2 battery holders DC Power Supply 1 multimeter 1 capacitance meter 2 voltage probes 1 long bulb and 1 round bulb 2 sockets 1 set of alligator
More informationPhysics 9 Fall 2009 Homework 6  Solutions
. Chapter 32  Exercise 8. Physics 9 Fall 29 Homework 6  s How much power is dissipated by each resistor in the figure? First, let s figure out the current in the circuit. Since the two resistors are
More informationStudents will need about 30 minutes to complete these constructed response tasks.
Electric Title of Circuits Concept Constructed Response Teacher Guide Students will need about 30 minutes to complete these constructed response tasks. Objectives assessed: Understand the functions of
More informationLecture PowerPoints. Chapter 19 Physics: Principles with Applications, 7th edition Giancoli
Lecture PowerPoints Chapter 19 Physics: Principles with Applications, 7th edition Giancoli This work is protected by United States copyright laws and is provided solely for the use of instructors in teaching
More informationCh 18 Direct Current Circuits. concept #2, 5, 10, 12, 13, 23 Problems #1, 5, 6, 11, 17, 25, 31, 32, 33, 35, 36, 37
Ch 18 Direct Current Circuits concept #2, 5, 10, 12, 13, 23 Problems #1, 5, 6, 11, 17, 25, 31, 32, 33, 35, 36, 37 currents are maintained by a source of emf (battery, generator) Sources of emf act as charge
More informationUnit 7: Electric Circuits
Multiple Choice Portion 1. The diagram below shows part of an electrical circuit. Unit 7: Electric Circuits 4. A 12 V battery supplies a 5.0 A current to two light bulbs as shown below. What are the magnitude
More informationHow many laws are named after Kirchhoff?
Chapter 32. Fundamentals of Circuits Surprising as it may seem, the power of a computer is achieved simply by the controlled flow of charges through tiny wires and circuit elements. Chapter Goal: To understand
More informationCircuits. Page The diagram below represents a series circuit containing three resistors.
Name: Circuits Date: 1. Which circuit segment has an equivalent resistance of 6 ohms? 4. The diagram below represents a series circuit containing three resistors. 2. Base your answer to the following question
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 informationExperiment 3 ~ Ohm's Law, Measurement of Voltage, Current and Resistance
Experiment 3 ~ Ohm's Law, Measurement of Voltage, Current and Resistance Objective: In this experiment you will learn to use the multimeter to measure voltage, current and resistance. Equipment: Bread
More informationChapter 11 Electricity
Chapter 11 Electricity Course Content Definition of Electricity Circuit Diagrams Series and Parallel Circuits Calculating total resistances Measurement of Electricity Ammeters and Voltmeters Ohm s Law
More informationLab #4 Capacitors and Inductors. Capacitor and Inductor Transient Response
Capacitor and Inductor Transient Response Capacitor Theory Like resistors, capacitors are also basic circuit elements. Capacitors come in a seemingly endless variety of shapes and sizes, and they can all
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 information= (0.400 A) (4.80 V) = 1.92 W = (0.400 A) (7.20 V) = 2.88 W
Physics 2220 Module 06 Homework 0. What are the magnitude and direction of the current in the 8 Ω resister in the figure? Assume the current is moving clockwise. Then use Kirchhoff's second rule: 3.00
More informationCapacitance, Resistance, DC Circuits
This test covers capacitance, electrical current, resistance, emf, electrical power, Ohm s Law, Kirchhoff s Rules, and RC Circuits, with some problems requiring a knowledge of basic calculus. Part I. Multiple
More informationResistors in Series and Parallel
Resistors in Series and Parallel INTRODUCTION Direct current (DC) circuits are characterized by the quantities current, voltage and resistance. Current is the rate of flow of charge. The SI unit is the
More informationCh. 20 Electric Circuits
Ch. 0 Electric Circuits 0. Electromotive Force Every electronic device depends on circuits. Electrical energy is transferred from a power source, such as a battery, to a device, say a light bulb. Conducting
More informationElectric Circuits Review
Electric Circuits Review 1. Which of the following statements are true about electric current? Circle all that apply. a. Electric current is measured in units of Amperes. b. Electric current is defined
More informationDC Circuits: Ch 19. Resistors in Series 6/1/2016
DC Circuits: Ch 19 Voltage Starts out at highest point at + end of battery Voltage drops across lightbulbs and other sources of resistance. Voltage increases again at battery. I The following circuit uses
More informationElectricity & Electronics 8: Capacitors in Circuits
Electricity & Electronics 8: Capacitors in Circuits Capacitors in Circuits IM This unit considers, in more detail, the charging and discharging of capacitors. It then investigates how capacitors behave
More informationHow Does it Flow? Electricity, Circuits, and Motors
How Does it Flow? Electricity, Circuits, and Motors Introduction In this lab, we will investigate the behavior of some direct current (DC) electrical circuits. These circuits are the same ones that move
More informationName: Lab Partner: Section:
Chapter 6 Capacitors and RC Circuits Name: Lab Partner: Section: 6.1 Purpose The purpose of this experiment is to investigate the physics of capacitors in circuits. The charging and discharging of a capacitor
More informationStoring And Releasing Charge In A Circuit
Storing And Releasing Charge In A Circuit Topic The characteristics of capacitors Introduction A capacitor is a device that can retain and release an electric charge, and is used in many circuits. There
More informationQ1. (a) The diagram shows the voltagecurrent graphs for three different electrical components.
Q. (a) The diagram shows the voltagecurrent graphs for three different electrical components. Which one of the components A, B or C could be a 3 volt filament lamp? Explain the reason for your choice...................
More informationEMF and Terminal Voltage Resistors in Series and Parallel Kirchhoff s Rules EMFs in Series and Parallel; Charging a Battery Circuits with Capacitors
Chapter 19 DC Electrical Circuits Topics in Chapter 19 EMF and Terminal Voltage Resistors in Series and Parallel Kirchhoff s Rules EMFs in Series and Parallel; Charging a Battery Circuits with Capacitors
More informationCHAPTER 28 ELECTRIC CIRCUITS
CHAPTER 8 ELECTRIC CIRCUITS 1. Sketch a circuit diagram for a circuit that includes a resistor R 1 connected to the positive terminal of a battery, a pair of parallel resistors R and R connected to the
More informationAnalog and Digital Meters
Analog and Digital Meters Devices and Measurements Objective At the conclusion of this presentation the student will describe and identify: Safety precautions when using test equipment Analog Multimeters
More informationPhysics Worksheet Electric Circuits Section: Name: Series Circuits
Do Now: (1) What is electric circuit? (2) Convert the following picture into schematic diagram. Series Circuits 4. Label every component of the circuit; identify each of the voltage and current. 5. Relation
More informationClicker Question. Which of the two arrangements shown has the smaller equivalent resistance between points a and b?
Which of the two arrangements shown has the smaller equivalent resistance between points a and b? A. the series arrangement B. the parallel arrangement C. The equivalent resistance is the same for both
More information1. Purpose Experimental verification of an exponential dependency between two physical quantities. Perform numerical evaluations.
Experimental Science P9: Capacitor charge and discharge 1. Purpose Experimental verification of an exponential dependency between two physical quantities. Perform numerical evaluations. 2. Introduction
More informationObjectives for the standardized exam
III. ELECTRICITY AND MAGNETISM A. Electrostatics 1. Charge and Coulomb s Law a) Students should understand the concept of electric charge, so they can: (1) Describe the types of charge and the attraction
More informationAP* Electric Circuits Free Response Questions
AP* Electric Circuits Free Response Questions 1996 Q4 (15 points) A student is provided with a 12.0V battery of negligible internal resistance and four resistors with the following resistances: 100 Ω,
More informationWhat will we learn in this chapter?
Chapter 19: Current, resistance, circuits What will we learn in this chapter? What are currents? Resistance and Ohm s law (no, there are no 3 laws). Circuits and electric power. Resistors in series and
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 informationPreLab 7 Assignment: Capacitors and RC Circuits
Name: Lab Partners: Date: PreLab 7 Assignment: Capacitors and RC Circuits (Due at the beginning of lab) Directions: Read over the Lab Handout and then answer the following questions about the procedures.
More informationMeasurements in electric circuits and Ohms Law
Measurements in electric circuits and Ohms Law Objective Learn to use voltmeter and amperemeter to perform measurement of voltage and current in simple electric circuits, learn and examine Ohm s law in
More informationCHAPTER12. Electricity. Multiple Choice Questions. Fig. 12.1
CHAPTER12 Electricity Multiple Choice Questions 1. A cell, a resistor, a key and ammeter are arranged as shown in the circuit diagrams of Figure12.1. The current recorded in the ammeter will be Fig. 12.1
More informationMore Concepts. I = dq. Current is the rate of flow of charge around a circuit.
RC Circuits In this presentation, circuits with multiple batteries, resistors and capacitors will be reduced to an equivalent system with a single battery, a single resistor, and a single capacitor. Kirchoff's
More informationChapter 21 Electric Current and DirectCurrent Circuit
Chapter 2 Electric Current and DirectCurrent Circuit Outline 2 Electric Current 22 Resistance and Ohm s Law 23 Energy and Power in Electric Circuit 24 Resistance in Series and Parallel 25 Kirchhoff
More informationOHM S LAW 05 AUGUST 2014
OHM S LAW 05 AUGUST 2014 In this lesson, we: Current Lesson Description Revise the definitions of current, potential difference and emf Explore Ohm s law Identify the characteristics of ohmic and nonohmic
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 informationTwo kinds of electrical charges
ELECTRICITY NOTES Two kinds of electrical charges Positive charge Negative charge Electrons are negatively charged Protons are positively charged The forces from positive charges are canceled by forces
More information1 of 8 3/30/2010 2:18 PM
1 of 8 3/30/2010 2:18 PM Chapter 32 Homework Due: 8:00am on Tuesday, March 30, 2010 Note: To understand how points are awarded, read your instructor's Grading Policy. [Return to Standard Assignment View]
More informationCapacitors. We charge a capacitor by connecting the two plates to a potential difference, such as a battery:
RC Circuits PHYS 1112L Capacitors A capacitor is an electrical component that stores charge. The simplest capacitor is just two charged metal plates separated by a nonconducting material: In the diagram
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 informationChapter 13 Electric Circuits
Chapter 13 Electric Circuits What is Electric Current? How does it resemble the flow of water in a pipe? Can you get a flashlight bulb to light, with a battery and a single wire? Electric Circuits and
More informationR C DMM. b a. Power Supply. b a. Power Supply DMM. Red + Black  Red + Black 
Sample Lab Report  PHYS 231 The following is an example of a wellwritten report that might be submitted by a PHYS 231 student. It begins with a short statement of what is being measured, and why. The
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 informationKirchhoff's Rules and Applying Them
[ Assignment View ] [ Eðlisfræði 2, vor 2007 26. DC Circuits Assignment is due at 2:00am on Wednesday, February 21, 2007 Credit for problems submitted late will decrease to 0% after the deadline has passed.
More informationQuiz: What is the voltage difference across the 25 resistance?
Quiz: What is the voltage difference across the 25 resistance? a) 0.1 V b) 2.5 V c) 6 V d) 25 V e) 60 V since I 25 I series : V 25 I series R 25 0.1 A 25 2.5 V In a parallel circuit, there are points
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 informationE X P E R I M E N T 7
E X P E R I M E N T 7 The RC Circuit Produced by the Physics Staff at Collin College Copyright Collin College Physics Department. All Rights Reserved. University Physics II, Exp 7: The RC Circuit Page
More informationElectrical Measurements
Electrical Measurements Experimental Objective The objective of this experiment is to become familiar with some of the electrical instruments. You will gain experience by wiring a simple electrical circuit
More informationCHAPTER 2. Basic Electronics & Theory. (The rules behind all those little things)
CHAPTER 2 Basic Electronics & Theory (The rules behind all those little things) 1 Current, Voltage, Resistance Water flowing through a hose is a good way to imagine electricity. Water is like Electrons
More informationOhms Law IDC Circuits with Light Bulbs PhET Lab I with Ammeters and Voltmeters
Ohms Law IDC Circuits with Light Bulbs PhET Lab I with Ammeters and Voltmeters by Dr. James E. Parks Department of Physics and Astronomy 401 Nielsen Physics Building The University of Tennessee Knoxville,
More informationElectric Currents. Electric Potential Energy 11/23/16. Topic 5.1 Electric potential difference, current and resistance
Electric Currents Topic 5.1 Electric potential difference, current and resistance Electric Potential Energy l If you want to move a charge closer to a charged sphere you have to push against the repulsive
More informationFREQUENTLY ASKED QUESTIONS October 2, 2012
FREQUENTLY ASKED QUESTIONS October 2, 2012 Content Questions Why do batteries require resistors? Well, I don t know if they require resistors, but if you connect a battery to any circuit, there will always
More informationStudent Content Brief Advanced Level
Student Content Brief Advanced Level Electric Circuits Background Information There are a variety of forces acting on the body of the Sea Perch. One important force is pushing electrons through the wires
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 information1. 1. Right Hand Rule Practice. Using the the right hand rule, find find the the direction of of the the missing information in in the the diagram.
1. 1. Right Hand Rule Practice Using the the right hand rule, find find the the direction of of the the missing information in in the the diagram. (A) (A) up up (C) (C) left left (B) (B) down (D) (D) right
More information= 1 R 1 + (2) + 1 R R 2
PHYS 140 General Physics II EXPERIMENT 4 SERIES AND PARALLEL RESISTANCE CIRCUITS I. OBJECTIVE: The objective of this experiment is the study of series and parallel resistive circuits. The student will
More informationPreview of Period 12: Electric Circuits
Preview of Period 2: Electric Circuits 2. Voltage, Current, and esistance How are voltage, current, and resistance related? 2.2 esistance and Voltage of esistors in Connected in Series How does current
More informationA) The potential difference across the 6ohm B) 2.0 A resistor is the same as the potential difference across the 3ohm resistor. D) 4.
1. A 2.0ohm resistor and a 4.0ohm resistor are connected in series with a 12volt battery. If the current through the 2.0ohm resistor is 2.0 amperes, the current through the 4.0ohm resistor is A) 1.0
More informationElectricity and Water Analogy
[ Assignment View ] [ Eðlisfræði 2, vor 2007 25. Current, Resistance, and Electromagnetic Force Assignment is due at 2:00am on Wednesday, February 14, 2007 Credit for problems submitted late will decrease
More informationSeries,"Parallel," and"series." Parallel"Circuits"
chapter 25 Series,"Parallel," and"series." Parallel"Circuits" FIGURE 25.1 A series circuit with three bulbs. All current flows through all resistances (bulbs). The total resistance of the circuit is the
More informationChapter 19 DC Circuits
Lecture PowerPoints Chapter 19 Physics: Principles with Applications, 6 th edition Giancoli Chapter 19 DC Circuits 2005 Pearson Prentice Hall This work is protected by United States copyright laws and
More informationRC Circuits and The Oscilloscope Physics Lab X
Objective RC Circuits and The Oscilloscope Physics Lab X In this series of experiments, the time constant of an RC circuit will be measured experimentally and compared with the theoretical expression for
More informationMeters  Ohm s Law R 2 R 1 APPARATUS INTRODUCTION R 1 R 2 A
Meters  Ohm s Law APPARATUS 1. Board on which two wires are mounted, each 1 m long, equipped with a sliding contact 2. Rheostat (variable resistance), 0... 7 Ω 3. DC ammeter (full scale: 2 A) 4. Voltmeter
More informationGoals. Introduction R = DV I (7.1)
Lab 7. Ohm s Law Goals To understand Ohm s law, used to describe the behavior of electrical conduction in many materials and circuits. To calculate the electrical power dissipated as heat in electrical
More informationPHYSICS LAB. Capacitor. Date: GRADE: PHYSICS DEPARTMENT JAMES MADISON UNIVERSITY. Revision November 2002. Capacitor 21
PHYSICS LAB Capacitor Printed Names: Signatures: Date: Lab Section: Instructor: GRADE: PHYSICS DEPARTMENT JAMES MADISON UNIVERSITY Revision November 2002 Capacitor 21 Blank page Capacitor 22 CHARGING AND
More informationUniversity Physics 227N/232N Current and Ohm s Law, Resistors, Circuits, and Kirchoff Lab this Friday, Feb 28 So NO QUIZ this Friday!
University Physics 227N/232N Current and Ohm s Law, Resistors, Circuits, and Kirchoff Lab this Friday, Feb 28 So NO QUIZ this Friday! Dr. Todd Satogata (ODU/Jefferson Lab) and Fred Miller satogata@jlab.org
More informationphysics 112N current, resistance and dc circuits
physics 112N current, resistance and dc circuits current! previously we considered electrostatic situations in which no Efield could exist inside a conductor! now we move to the case where an electric
More informationChapter 1. Components, Quantities, and Units ISU EE. C.Y. Lee
Chapter 1 Components, Quantities, and Units Objectives Recognize common electrical components and measuring instruments State basic electrical and magnetic quantities and their units Use scientific notation
More informationScience AS90191 Describe Aspects of Physics.
Circuits and components Science AS90191 Describe Aspects of Physics. An electric current is the movement of electrons (negatively charged particles). A circuit is made up of components connected together
More informationCircuitsCircuit Analysis
Base your answers to questions 1 through 3 on the information and diagram below. 4. A 9volt battery is connected to a 4ohm resistor and a 5ohm resistor as shown in the diagram below. A 3.0ohm resistor,
More informationChapter 2 Objectives
Chapter 2 Engr228 Circuit Analysis Dr Curtis Nelson Chapter 2 Objectives Understand symbols and behavior of the following circuit elements: Independent voltage and current sources; Dependent voltage and
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 informationElectrical Circuit Calculations
Electrical Circuit Calculations Series Circuits Many circuits have more than one conversion device in them (i.e. toaster. heater. lamps etc.) and some have more than one source of electrical energy. If
More informationelectrons/s
CURRNT, RSISTANC, AND DIRCTCURRNT CIRCUITS 9 Answers to MultipleChoice Problems. B 2. B 3. D 4. B, D 5. A 6. A 7. C 8. A 9. C 0. C. C 2. C 3. C 4. A 5. Solutions to Problems 9.. Set Up: A 5 C/s. An electron
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 informationExperiment 9 ~ RC Circuits
Experiment 9 ~ RC Circuits Objective: This experiment will introduce you to the properties of circuits that contain both resistors AND capacitors. Equipment: 18 volt power supply, two capacitors (8 µf
More informationQ1. (a) Complete the sentence below to name the instrument used to measure electrical current.
Q. (a) Complete the sentence below to name the instrument used to measure electrical current. The instrument used to measure electrical current is called... () (b) In the diagram below each box contains
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 informationReactance and Impedance
Reactance and Impedance Capacitance in AC Circuits Professor Andrew H. Andersen 1 Objectives Describe capacitive ac circuits Analyze inductive ac circuits Describe the relationship between current and
More informationPure water is nonconducting. Gas discharges. Current flow of electric charge. L 26 Electricity and Magnetism [3] A salt water solution is a conductor
L 26 Electricity and Magnetism [3] Electric circuits what conducts electricity what doesn t conduct electricity Current voltage and resistance Ohm s Law Heat in a resistor power loss Making simple circuit
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 informationLab 5 RC Circuits: Charge Changing in Time Observing the way capacitors in RC circuits charge and discharge.
Print Your Name Lab 5 RC Circuits: Charge Changing in Time Observing the way capacitors in RC circuits charge and discharge. Print Your Partners' Names Instructions October 15, 2015October 13, 2015 Read
More informationChapter 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 informationBASIC ELECTRONICS PROF. T.S. NATARAJAN DEPT OF PHYSICS IIT MADRAS LECTURE4 SOME USEFUL LAWS IN BASIC ELECTRONICS
BASIC ELECTRONICS PROF. T.S. NATARAJAN DEPT OF PHYSICS IIT MADRAS LECTURE4 SOME USEFUL LAWS IN BASIC ELECTRONICS Hello everybody! In a series of lecture on basic electronics, learning by doing, we now
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 informationThe content contained in sections 1 4, 6 9, 11 13, and 15 of chapter 20 of the textbook is included on the AP Physics B exam.
hapter 0 Electric ircuits hapter 0 ELETR RUTS PREVEW onventional current is the flow of positive charges though a closed circuit. The current through a resistance and the voltage which produces it are
More informationR1 R2 R3. Figure1. Resistances in series V1 I. Figure 2. Equivalent circuit of figure 1 if RE= R1+R2+R3 VRE =V
Supplementary Notes for Unit 2  Part A (Unit 3 and 4 exams also includes the topics detailed in this note) Series circuits A series circuit is a circuit in which resistors are arranged in a chain, so
More informationDischarge of a Capacitor
Discharge of a Capacitor THEORY The charge Q on a capacitor s plate is proportional to the potential difference V across the capacitor. We express this with Q = C V (1) where C is a proportionality constant
More informationEXPERIMENT 4: MEASUREMENT OF REACTANCE OFFERED BY CAPACITOR IN DIFFERENT FREQUENCY FOR RC CIRCUIT
Kathmandu University Department of Electrical and Electronics Engineering BASIC ELECTRICAL LAB (ENGG 103) EXPERIMENT 4: MEASUREMENT OF REACTANCE OFFERED BY CAPACITOR IN DIFFERENT FREQUENCY FOR RC CIRCUIT
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 informationHomework. Reading: Chap. 30, Chap. 31 and Chap. 32. Suggested exercises: 31.1, 5, 6, 7, 8, 13, 14, 17, 23, 24, 25
Homework Reading: Chap. 30, Chap. 31 and Chap. 32 Suggested exercises: 31.1, 5, 6, 7, 8, 13, 14, 17, 23, 24, 25 Problems: 31.35, 31.38, 31.41, 31.42, 31.49, 31.54, 31.57, 31.63, 31.64, 31.67, 31.70, 31.73
More informationChapter 18 Electric Current and Circuits
Chapter 18 Electric Current and Circuits 3. When a current flows down a wire: A. electrons are moving in the direction of the current. B. electrons are moving opposite the direction of the current. C.
More information