Q1. (a) The diagram shows the voltage-current graphs for three different electrical components.

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Q1. (a) The diagram shows the voltage-current graphs for three different electrical components."

Transcription

1 Q. (a) The diagram shows the voltage-current 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 (b) Using the correct symbols draw a circuit diagram to show how a battery, ammeter and voltmeter can be used to find the resistance of the wire shown. (c) When correctly connected to a 9 volt battery the wire has a current of 0.30 amperes flowing through it. (i) Give the equation that links current, resistance and voltage.... () (ii) Calculate the resistance of the wire. Show clearly how you work out your answer and give the unit Resistance =... Page

2 (iii) When the wire is heated, the current goes down to 0.26 amperes. State how the resistance of the wire has changed () (Total marks) Q2. A circuit was set up as shown in the diagram. (a) The table gives the current through three of the ammeters. Complete the table to show the current through the other two ammeters. Ammeter Reading on ammeter in amps A l 0.2 A A A 4 A 5 (2) Page 2

3 (b) The reading on the voltmeter is 2 V. What is the resistance of R 2? Show your working and include the correct unit Resistance =... (c) In the circuit above, the resistor R 2 burned out and current stopped flowing in it. There was no other change to the circuit. Complete the table below to show the readings on the ammeters after this took place. Ammeter Reading on ammeter in amps A l 0.2 A A 3 A 4 A 5 (Total 8 marks) Page 3

4 Q3. The diagram shows a 2 volt lighting system. Each lamp has a power of 32 watts. (i) Write down the equation that links current, potential difference and power.... () (ii) Calculate the input current to the lighting system. Show clearly how you work out your answer current =... A (2) (Total 3 marks) Page 4

5 Q4. The diagram below shows how one type of fuel gauge in a car works. A sliding contact makes contact with a resistance wire wound in a coil (rheostat). It is connected to a float via a pivot P. When the petrol level changes the circuit resistance changes. This causes the pointer in the fuel gauge to move and show how much petrol is in the petrol tank. The circuit diagram is shown below. The petrol gauge is an ammeter. Explain why the reading on the ammeter falls as the petrol is used (Total 3 marks) Page 5

6 M. (a) C award mark if A and B identified as not filament lamp resistance increases negated by wrong statement e.g. current goes down as the lamp gets hot accept as current (through lamp) or voltage (across lamp) increases do not accept non-ohmic reason independent of choice of component (b) ammeter wire and battery only in series non standard symbols acceptable if correctly identified (labelled) for ammeter, voltmeter and battery voltmeter only in parallel with wire or battery all in series or ammeter in parallel neither of these two marks awarded all symbols correct ignore lines drawn through centres of symbols (c) (i) voltage = current resistance accept V = I R accept volts = amps ohms do not accept V = C R accept if subsequent method correct (ii) 30 Page 6

7 accept correct substitution for mark (9/0.3) 2 ohms accept correct symbol Ω (iii) goes up must be a comparison accept calculation if answer is larger than c (ii) [] M2. (a) 0.9. accept the value of A (b) V = I R or 2 = 0.6 R or accept V = A R V = I ohm s sign do not credit Ohm s law triangle 2 R = 20 correct numerical answer earns both marks ohms (c) A 3 = 0.3 A 4 = 0.3 accept the same numeric value as A 3 A 5 = 0.5 Page 7

8 accept the value of A [8] M3. (i) power = potential difference current accept voltage for potential difference accept P = V I or correct transposition accept provided subsequent method correct (ii) 8 allow mark for correct substitution or transformation or an answer 2.67 / [3] M4. level drops as petrol used; causes circuit resistance to increase; causes current to decrease for mark each or if change not specified; (one correct and two vague statements gains 2 marks, three vague statements gains mark) e.g. level changes; ) so resistance changes; ) = mark so current changes ) [3] Page 8

Circuits. Page The diagram below represents a series circuit containing three resistors.

Circuits. 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 information

Q1. (a) Complete the sentence below to name the instrument used to measure electrical current.

Q1. (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 information

A) The potential difference across the 6-ohm B) 2.0 A resistor is the same as the potential difference across the 3-ohm resistor. D) 4.

A) The potential difference across the 6-ohm B) 2.0 A resistor is the same as the potential difference across the 3-ohm resistor. D) 4. 1. A 2.0-ohm resistor and a 4.0-ohm resistor are connected in series with a 12-volt battery. If the current through the 2.0-ohm resistor is 2.0 amperes, the current through the 4.0-ohm resistor is A) 1.0

More information

Circuits-Circuit Analysis

Circuits-Circuit Analysis Base your answers to questions 1 through 3 on the information and diagram below. 4. A 9-volt battery is connected to a 4-ohm resistor and a 5-ohm resistor as shown in the diagram below. A 3.0-ohm resistor,

More information

OHM S LAW 05 AUGUST 2014

OHM 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 non-ohmic

More information

1) 10. V 2) 20. V 3) 110 V 4) 220 V

1) 10. V 2) 20. V 3) 110 V 4) 220 V 1. The diagram below represents an electric circuit consisting of a 12-volt battery, a 3.0-ohm 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 information

The diagram shows a negatively charged plastic rod held near to a thin stream of water. The water is attracted towards the rod.

The diagram shows a negatively charged plastic rod held near to a thin stream of water. The water is attracted towards the rod. Current electricity exam qs C grade Madeley High School Q.(a) The diagram shows a negatively charged plastic rod held near to a thin stream of water. The water is attracted towards the rod. Which one of

More information

Electrostatics. Electrostatics Version 2

Electrostatics. Electrostatics Version 2 1. A 150-watt lightbulb is brighter than a 60.-watt lightbulb when both are operating at a potential difference of 110 volts. Compared to the resistance of and the current drawn by the 150-watt lightbulb,

More information

Series and Parallel Circuits

Series 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 end-to-end. A parallel

More information

CHAPTER12. Electricity. Multiple Choice Questions. Fig. 12.1

CHAPTER12. 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 information

Science AS90191 Describe Aspects of Physics.

Science 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 information

Circuit 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.

Circuit 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 Light-dependent resistor (LDR) Lamp Light-emitting diode (LED) (3) Figure shows three circuits. The resistors

More information

Electric Circuits Review

Electric 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 information

Chapter 11- Electricity

Chapter 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 information

Student Exploration: Circuits

Student 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 information

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

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 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

More information

ELECTRICITY PROBLEMS BASED ON PRACTICAL SKILLS

ELECTRICITY PROBLEMS BASED ON PRACTICAL SKILLS ELECTRICITY PROBLEMS BASED ON PRACTICAL SKILLS 1 To determine the equivalent resistance of two resistors when connected in series, a student arranged the circuit components as shown in the diagram. But

More information

Students will need about 30 minutes to complete these constructed response tasks.

Students 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 information

Saturday X-tra X-Sheet: 19. Electric circuits

Saturday X-tra X-Sheet: 19. Electric circuits Saturday X-tra X-Sheet: 9 Key Concepts Electric circuits This lesson focuses on the following: Potential Difference Current The resistance of a conductor Ohm s Law and circuit calculations Terminology

More information

Meters - Ohm s Law R 2 R 1 APPARATUS INTRODUCTION R 1 R 2 A

Meters - 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 information

Preview of Period 13: Electrical Resistance and Joule Heating

Preview of Period 13: Electrical Resistance and Joule Heating Preview of Period 13: Electrical Resistance and Joule Heating 13.1 Electrical Resistance of a Wire What does the resistance of a wire depend upon? 13.2 Resistance and Joule Heating What effect does resistance

More information

PHYSICS 111 LABORATORY Experiment #3 Current, Voltage and Resistance in Series and Parallel Circuits

PHYSICS 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 information

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

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 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

More information

Goals. Introduction R = DV I (7.1)

Goals. 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 information

Electric Currents. Electric Potential Energy 11/23/16. Topic 5.1 Electric potential difference, current and resistance

Electric 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 information

Current Electricity Lab Series/Parallel Circuits. Safety and Equipment Precautions!

Current 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 information

Unit 7: Electric Circuits

Unit 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 information

[2]...[1] [3]

[2]...[1] [3] High Demand Questions QUESTIONSHEET 1 (a) In the circuit below, lamps P and Q are identical. The reading on the ammeter is 3A. The cell shown is of emf. 6V. A P Q Calculate the current that passes through

More information

Physics Worksheet Electric Circuits Section: Name: Series Circuits

Physics 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 information

13.10: How Series and Parallel Circuits Differ pg. 571

13.10: 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 information

PHY 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: 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 information

(a) A technician investigates a light-dependent resistor (LDR) connected in series with a 120 Ω resistor and a voltage source.

(a) A technician investigates a light-dependent resistor (LDR) connected in series with a 120 Ω resistor and a voltage source. Questions Q1. (a) A technician investigates a light-dependent resistor (LDR) connected in series with a 120 Ω resistor and a voltage source. The technician measures the voltage across the LDR and also

More information

MC Electricity Resistors Review

MC Electricity Resistors Review 2. In the circuit shown above, what is the value of the potential difference between points X and Y if the 6 volt battery has no internal resistance? (A) 1 V (B) 2 V (C) 3 V (D) 4 V (E) 6V 8. The circuit

More information

Circuits Review KEY Interpreting Diagrams Use the diagram below to answer the following questions.

Circuits Review KEY Interpreting Diagrams Use the diagram below to answer the following questions. Circuits Review KEY Interpreting Diagrams Use the diagram below to answer the following questions. 1. Look at the arrows which indicate the direction of the flow of electrons. Label the negative and the

More information

Chapter 13 Electric Circuits

Chapter 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 information

3_given a graph of current_voltage for a resistor, determine the resistance. Three resistance R1 = 1.0 kω, R2 = 1.5 kω, R3 = 2.

3_given a graph of current_voltage for a resistor, determine the resistance. Three resistance R1 = 1.0 kω, R2 = 1.5 kω, R3 = 2. Ohm s Law Objectives: 1_measure the current_voltage curve for a resistor 2_construct a graph of the data from objective 1 3_given a graph of current_voltage for a resistor, determine the resistance Equipment:

More information

1. What is the potential difference across a 5 ohm resistor which carries a current of 5 A? a. 100 V b. 25 V c. 4 V d. 1 V

1. What is the potential difference across a 5 ohm resistor which carries a current of 5 A? a. 100 V b. 25 V c. 4 V d. 1 V 3s 1. What is the potential difference across a 5 ohm resistor which carries a current of 5 A? a. 100 V b. 25 V c. 4 V d. 1 V 2. A superconducting wire's chief characteristic is which of the following?

More information

PARALLEL CIRCUITS. The voltage is the same across all components in a parallel circuit. Figure 1.

PARALLEL CIRCUITS. The voltage is the same across all components in a parallel circuit. Figure 1. Reading 6 Ron Bertrand VK2DQ http://www.radioelectronicschool.com PARALLEL CIRCUITS When two or more components are connected across one voltage source they form a parallel circuit. The two lamps in figure

More information

Section 4. Ohm s Law: Putting up a Resistance. What Do You See? What Do You Think? Investigate. Learning Outcomes

Section 4. Ohm s Law: Putting up a Resistance. What Do You See? What Do You Think? Investigate. Learning Outcomes Section 4: Ohm s Law: Putting up a Resistance Section 4 Ohm s Law: Putting up a Resistance What Do You See? Learning Outcomes In this section, you will Calculate the resistance of an unknown resistor given

More information

Experiment NO.3 Series and parallel connection

Experiment 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 information

= 1 R 1 + (2) + 1 R R 2

= 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 information

Chapter 13: Electric Circuits

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 information

THE 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 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

EMF & INTERNAL RESISTANCE 28 JULY 2015 Section A: Summary Notes

EMF & INTERNAL RESISTANCE 28 JULY 2015 Section A: Summary Notes EMF & INTERNAL RESISTANCE 28 JULY 2015 Section A: Summary Notes Internal Resistance The emf of a cell is the maximum amount of energy which the cell can supply. When the cell is delivering current, the

More information

Level 2 Physics: Demonstrate understanding of electricity and electromagnetism

Level 2 Physics: Demonstrate understanding of electricity and electromagnetism Level 2 Physics: Demonstrate understanding of electricity and electromagnetism Static Electricity: Uniform electric field, electric field strength, force on a charge in an electric field, electric potential

More information

Electric Currents & DC Circuits

Electric Currents & DC Circuits Slide 1 / 70 Slide 2 / 70 1 The length of an aluminum wire is quadrupled and the radius is doubled. y which factor does the resistance change? lectric urrents & ircuits 2 4 1/2 1/4 1 Slide 3 / 70 2 copper

More information

Electricity Review-Sheet

Electricity Review-Sheet Name: ate: 1. The unit of electrical charge in the MKS system is the. volt. ampere. coulomb. mho 2. Which sketch best represents the charge distribution around a neutral electroscope when a positively

More information

Student Content Brief Advanced Level

Student 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 information

ELECTRICITY: CIRCUIT QUESTIONS

ELECTRICITY: CIRCUIT QUESTIONS ELECTRICITY: CIRCUIT QUESTIONS Resistors in a DC circuit (2014;2) Sandra is investigating electrical circuits in the lab. She connects various resistors in combination. The current drawn from the supply

More information

ElectronicsLab2.nb. Electronics Lab #2. Simple Series and Parallel Circuits

ElectronicsLab2.nb. Electronics Lab #2. Simple Series and Parallel Circuits Electronics Lab #2 Simple Series and Parallel Circuits The definitions of series and parallel circuits will be given in this lab. Also, measurements in very simple series and parallel circuits will be

More information

Fig. 1 Analogue Multimeter Fig.2 Digital Multimeter

Fig. 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 information

Experiment 3 ~ Ohm's Law, Measurement of Voltage, Current and Resistance

Experiment 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 multi-meter to measure voltage, current and resistance. Equipment: Bread

More information

Duration of resource: 23 Minutes. Year of Production: Stock code: VEA12041

Duration of resource: 23 Minutes. Year of Production: Stock code: VEA12041 ADDITIONAL RESOURCES We use electrical circuits every day. In the home, the car, at work and school they are a vital part of our lives. This program covers the basics of electrical circuits in detail.

More information

EELE 354 Lab Assignment 3: Series and Parallel Resistors, Ohm s Law and Kirchhoff s Circuit Laws

EELE 354 Lab Assignment 3: Series and Parallel Resistors, Ohm s Law and Kirchhoff s Circuit Laws EELE 354 Lab Assignment 3: Series and Parallel Resistors, Ohm s Law and Kirchhoff s Circuit Laws EELE 354 Lab Assignment 3 1 Lab Overview: Many electric loads such as electric heaters and light bulbs can

More information

Question Bank. Electric Circuits, Resistance and Ohm s Law

Question Bank. Electric Circuits, Resistance and Ohm s Law Electric Circuits, Resistance and Ohm s Law. Define the term current and state its SI unit. Ans. The rate of flow of charge in an electric circuit is called current. Its SI unit is ampere. 2. (a) Define

More information

RESISTANCE & OHM S LAW (PART I

RESISTANCE & OHM S LAW (PART I RESISTANCE & OHM S LAW (PART I and II) Objectives: To understand the relationship between potential and current in a resistor and to verify Ohm s Law. To understand the relationship between potential and

More information

Exampro GCSE Physics. P2 Foundation - Static and Electrical Circuits Self Study Questions. Name: Class: Author: Date: Time: 129. Marks: 129.

Exampro GCSE Physics. P2 Foundation - Static and Electrical Circuits Self Study Questions. Name: Class: Author: Date: Time: 129. Marks: 129. Exampro GCSE Physics P2 Foundation - Static and Electrical Circuits Self Study Questions Name: Class: Author: Date: Time: 29 Marks: 29 Comments: Page of 45 Q. The diagram shows a circuit. (a) (i) Name

More information

1 THE LIGHT BULB EXPERIMENT: Exploring Simple Electric Circuits

1 THE LIGHT BULB EXPERIMENT: Exploring Simple Electric Circuits 1 THE LIGHT BULB EXPERIMENT: Exploring Simple Electric Circuits Preparatory Questions for Review: (also read this guide sheet, which contains some of the answers!) 1. State Ohm s Law, defining every term

More information

Series,"Parallel," and"series." Parallel"Circuits"

Series,Parallel, andseries. ParallelCircuits 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 information

Background: Electric resistance, R, is defined by:

Background: Electric resistance, R, is defined by: RESISTANCE & OHM S LAW (PART I and II) - 8 Objectives: To understand the relationship between applied voltage and current in a resistor and to verify Ohm s Law. To understand the relationship between applied

More information

Series and Parallel Resistive Circuits Physics Lab VIII

Series 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 information

Electrical Circuit Calculations

Electrical 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 information

B. 1.3 Ω D Ω (Total 1 mark)

B. 1.3 Ω D Ω (Total 1 mark) Practice Test: 30 marks (39 minutes) Additional Problem: 5 marks (37 minutes) 1. One electronvolt is equal to A. 1.6 10 19 C. B. 1.6 10 19 J. C. 1.6 10 19 V. D. 1.6 10 19 W.. In the circuit below, which

More information

Ohm s Law and Simple Electrical Connections

Ohm s Law and Simple Electrical Connections Ohm s Law and Simple Electrical Connections Purpose: To experimentally verify Ohm s Law and to provide experience in making series and parallel electrical connections. TO OD RUNNG FUSES CHECK LL CRCUT

More information

Ohm s Law & Series Circuit

Ohm s Law & Series Circuit Open the TI-Nspire document Ohms_Law_&_Series_Circuit.tns. We all use and rely on electric circuits every day by flipping a switch, turning up the volume, or operating a computer or calculator. Even the

More information

Preview of Period 12: Electric Circuits

Preview 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 information

Parallel DC circuits

Parallel 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 information

CHAPTER 36 SERIES AND PARALLEL NETWORKS

CHAPTER 36 SERIES AND PARALLEL NETWORKS CHAPE 36 SEIES AND PAALLEL NEWOKS EECISE 69, Page 377. he p.d. s measured across three resistors connected in series are V, 7 V and 0 V, and the supply current is A. Determine (a) the supply voltage, (b)

More information

AP Physics Electricity and Magnetism #4 Electrical Circuits, Kirchoff s Rules

AP 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 information

Pure water is non-conducting. Gas discharges. Current flow of electric charge. L 26 Electricity and Magnetism [3] A salt water solution is a conductor

Pure water is non-conducting. 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 information

People s Physics Book

People 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 information

Note-A-Rific: Characteristics

Note-A-Rific: Characteristics Note-A-Rific: Characteristics Any path along which electrons can flow is a circuit. For a continuous flow of electrons, there must be a complete circuit with no gaps. A gap is usually an electric switch

More information

COMPONENT SYMBOL COMPONENT SYMBOL

COMPONENT SYMBOL COMPONENT SYMBOL DUNFERMLINE HIGH SCHOOL NATIONAL PHYSICS HOMEWORK 01 Symbols and Plug EQUATIONS: Question 1 5 Marks Copy and complete the following table. COMPONENT SYMBOL COMPONENT SYMBOL wire switch cell battery bulb

More information

Currents in electrical circuits

Currents in electrical circuits Currents in electrical circuits P2 73 minutes 73 marks Page of 3 Q. (a) The diagram shows the inside of a three-pin plug. (i) What name is given to the wire labelled S? Draw a ring around the correct answer.

More information

Electrical Fundamentals Module 3: Parallel Circuits

Electrical 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 information

What is the direction of a compass needle placed at point A?

What is the direction of a compass needle placed at point A? SAMPLE QUIZ: COVERAGE OHM S LAW CIRCUIT ANALYSIS RESISTANCE ELECTRICAL POWER MAGNETISM AND ELECTROMAGNETISM MAGNETISM: 1. In order to produce a magnetic field, an electric charge must be 1. stationary

More information

AP* Electric Circuits Free Response Questions

AP* Electric Circuits Free Response Questions AP* Electric Circuits Free Response Questions 1996 Q4 (15 points) A student is provided with a 12.0-V battery of negligible internal resistance and four resistors with the following resistances: 100 Ω,

More information

Chapter 2 Objectives

Chapter 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 information

Series and Parallel Wiring

Series and Parallel Wiring Series and Parallel Wiring Thus far, we have dealt with circuits that include only a single device, such as a light bulb. There are, however, many circuits in which more than one device is connected to

More information

Two kinds of electrical charges

Two 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 information

Chapter 18: Circuits and Circuit Elements 1. Schematic diagram: diagram that depicts the construction of an electrical apparatus

Chapter 18: Circuits and Circuit Elements 1. Schematic diagram: diagram that depicts the construction of an electrical apparatus Chapter 18: Circuits and Circuit Elements 1 Section 1: Schematic Diagrams and Circuits Schematic Diagrams Schematic diagram: diagram that depicts the construction of an electrical apparatus Uses symbols

More information

Ohmic and non ohmic resistors in test

Ohmic and non ohmic resistors in test Experiment 05 Ohmic and non ohmic resistors in test By Christian Redeker 07.11.2007 Contents 1.) Hypothesis...3 2.) Diagram...5 3.) Method...5 4.) Errors...5 4.1) Systematic errors...5 4.2) Random errors...5

More information

Electrical Measurements

Electrical 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 information

Objectives 200 CHAPTER 4 RESISTANCE

Objectives 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 information

8.3. Resistance and Ohm s Law. Did You Know? Resistance and the Flow of Electrons. Words to Know

8.3. Resistance and Ohm s Law. Did You Know? Resistance and the Flow of Electrons. Words to Know 8.3 Resistance and Ohm s Law Resistance slows down the flow of electrons and transforms electrical energy. Resistance is measured in ohms ( ). We calculate resistance by applying a voltage and measuring

More information

R A _ + Figure 2: DC circuit to verify Ohm s Law. R is the resistor, A is the Ammeter, and V is the Voltmeter. A R _ +

R A _ + Figure 2: DC circuit to verify Ohm s Law. R is the resistor, A is the Ammeter, and V is the Voltmeter. A R _ + Physics 221 Experiment 3: Simple DC Circuits and Resistors October 1, 2008 ntroduction n this experiment, we will investigate Ohm s Law, and study how resistors behave in various combinations. Along the

More information

Episode 118: Potential dividers

Episode 118: Potential dividers Episode 118: Potential dividers This episode introduces the use of a potential divider as a source of variable pd. Students will also learn to use potential dividers to detect temperature or light levels.

More information

SIMPLE ELECTRIC CIRCUITS

SIMPLE ELECTRIC CIRCUITS -18- Preparatory Questions: (also read this guide sheet, which contains some of the answers!) 1. State Ohm s Law, defining every term in the equation. 2. If a bulb connected directly to a 6 V battery glows

More information

MAGNETISM AND ELECTRICITY

MAGNETISM AND ELECTRICITY WEEK 19 MAGNETISM AND ELECTRICITY ELECTRIC CIRCUITS. 1 Resistance: After this lesson, you should be able to do the following: Know how to define resistance. Know what resistance is. Know the unit for resistance.

More information

The 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.

The 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 information

Ohms Law I--DC Circuits with Light Bulbs PhET Lab I with Ammeters and Voltmeters

Ohms Law I--DC Circuits with Light Bulbs PhET Lab I with Ammeters and Voltmeters Ohms Law I--DC 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 information

Series circuits. The ammeter

Series circuits. The ammeter Series circuits D o you remember how the parts of the torch on pages 272 3 were connected together? The circuit contained several components, connected one after the other. Conductors, like the metal strip

More information

ch 18 practice Multiple Choice

ch 18 practice Multiple Choice ch 18 practice Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which of the following is the best description of a schematic diagram? a. uses pictures

More information

Ohm's Law and Circuits

Ohm'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 information

EE301 RESISTANCE AND OHM S LAW

EE301 RESISTANCE AND OHM S LAW Learning Objectives a. Describe the concept of resistance b. Use Ohm s law to calculate current, voltage, and resistance values in a circuit c. Discuss the difference between an open circuit and a short

More information

= (0.400 A) (4.80 V) = 1.92 W = (0.400 A) (7.20 V) = 2.88 W

= (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 information

Kirchhoff s Laws. Kirchhoff's Law #1 - The sum of the currents entering a node must equal the sum of the currents exiting a node.

Kirchhoff s Laws. Kirchhoff's Law #1 - The sum of the currents entering a node must equal the sum of the currents exiting a node. Kirchhoff s Laws There are two laws necessary for solving circuit problems. For simple circuits, you have been applying these equations almost instinctively. Kirchhoff's Law #1 - The sum of the currents

More information

Analog and Digital Meters

Analog 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 information

Electrical Circuits. Ammeter Light Bulb Ohmmeter. Power Supply Resistor Voltmeter. Symbols for Electrical Components.

Electrical Circuits. Ammeter Light Bulb Ohmmeter. Power Supply Resistor Voltmeter. Symbols for Electrical Components. PHSC 101 Electrical Circuits Name Purpose To learn how to measure resistance, voltage, and current using a multimeter. To become familiar with the basic components of simple electrical circuits and Ohm's

More information

Junior Cert Science Numeracy Resources

Junior 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 information