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Measuring voltage

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Lesson details

Lesson outcome

Waxaan qeexi karaa sida loo qiyaaso danabka iyo saamaynta danabka kala duwan ee unugga ama baytariyada ku leeyihiin wareegga korontada.

Introduction

In this lesson: I can describe how to measure voltage and the effect of different cell or battery voltages on an electric circuit. Voltage is a commonly used term for potential difference. A voltmeter measures the voltage supplied by a cell or battery or across a component.

Show transcript
Voltage is a commonly used term for potential difference. A voltmeter measures the voltage supplied by a cell or battery or across a component. A voltmeter is connected across the terminals of a cell, battery, or component. Voltage (or potential difference) is measured in volts (V). The voltage of a cell or battery indicates the force 'pushing' electric charges around a circuit.

Worksheet

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Quizzes

  1. 1. Which of the following flow through the wires in electrical circuits? Select all that apply.

    • Correct answer:current
    • Correct answer:charge
    • voltage
    • Correct answer:electrons

  2. 2. Which of the following components is used to measure current?

    • voltmeter
    • Correct answer:ammeter
    • newton meter
    • thermometer

  3. 3. Which of the following are units of current?

    • Correct answer:amps
    • coulombs
    • Correct answer:amperes
    • ohms
    • volts

  4. 4. Which of the following components does the symbol shown represent?

    • ammeter
    • multimeter
    • joulemeter
    • Correct answer:voltmeter

  5. 5. Which two of the following components are shown in this circuit?

    • Correct answer:cell
    • motor
    • electrons
    • Correct answer:bulb

  6. 6. What is a voltmeter used to measure?

    • current
    • charge
    • Correct answer:voltage
    • resistance

  1. 1. Which of the following is another term used for voltage?

    • potential energy
    • gravitational potential
    • Correct answer:potential difference
    • elastic potential

  2. 2. Which of the following is the name of the device shown?

    • ammeter
    • resistor
    • lamp
    • Correct answer:voltmeter

  3. 3. The circuit shown has been set up incorrectly. Which of the following actions should be taken to correct it?

    • Correct answer:swap the positions of the voltmeter and ammeter
    • swap the positions of the lamp and ammeter
    • swap the positions of the voltmeter and lamp
    • put the lamp, ammeter and voltmeter in series with each other

  4. 4. The lamps in the circuit shown contain identical bulbs and the circuit is working as it should be. Which of the following statements about the circuit are correct?

    • the bulb in lamp 1 is the brightest, followed by lamp 2 and then lamp 3
    • Correct answer:the bulbs in all of the lamps are the same brightness
    • the bulbs in lamps 1 and 3 are bright and the bulb in lamp 2 is dim
    • the bulb in lamp 3 is the brightest, followed by lamp 2 and then lamp 1

  5. 5. The two alkaline cells shown can both be used for the same circuit. Which of the following statements about the cells are correct?

    • Correct answer:they both have the same voltage
    • the larger cell will have a higher voltage
    • Correct answer:the larger cell will last longer
    • they will both last the same time

What pupils see

The same lesson as a pupil sees it. You can set any section as work on its own.

  • IntroductionPrepare
  • Starter quizActivate · 6 questions
  • Lesson videoLearn
  • Exit quizCheck · 5 questions
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