Lesson 6.2.4.2

6.2.4.2 Energy transfers in everyday appliances Quiz: AQA Combined Science, Unit 19

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 6.2.4.2, Energy transfers in everyday appliances: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 19: Electricity, written with Revision Ninja.

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The 20 questions

  1. Which equation gives the energy transferred by an appliance from its power and the time it is on?

    • E = P + t
    • E = P / t
    • E = P x t squared
    • E = P x t

  2. Which equation gives electrical energy transferred from charge flow and potential difference?

    • E = Q x V
    • E = Q / V
    • E = Q + V
    • E = Q x V squared

  3. What is the unit of energy transferred?

    • Joule
    • Watt
    • Coulomb
    • Volt

  4. What is the unit of charge flow?

    • Joule
    • Ohm
    • Coulomb
    • Volt

  5. When charge flows through a circuit, what does the work done represent?

    • Power destroyed
    • Resistance created
    • Energy transferred
    • Voltage lost

  6. What is the main energy transfer for an electric fan motor?

    • Chemical energy
    • Nuclear energy
    • Kinetic energy
    • Thermal energy

  7. What is the main energy transfer for an electric heating appliance?

    • Light energy
    • Kinetic energy
    • Sound energy
    • Thermal energy

  8. What two factors determine the total energy transferred by an appliance?

    • Power and time
    • Voltage and mass
    • Resistance and charge
    • Current and length

  9. A 2000 W kettle is switched on for 300 s. How much energy does it transfer?

    • 600 000 J
    • 6 000 J
    • 6.67 J
    • 2 300 000 J

  10. A 2.2 kW appliance runs for 3 minutes. How much energy does it transfer?

    • 396 kJ
    • 7.3 kJ
    • 660 kJ
    • 13.2 kJ

  11. A charge of 20 C flows through a component with a potential difference of 12 V. What energy is transferred?

    • 2400 J
    • 1.7 J
    • 240 J
    • 32 J

  12. A 60 W lamp is on for 10 s. What energy is transferred?

    • 6000 J
    • 70 J
    • 6 J
    • 600 J

  13. An appliance transfers 1800 J in 60 s. What is its power?

    • 1.8 W
    • 300 W
    • 108 000 W
    • 30 W

  14. Appliance A (1000 W, 1 hour) and Appliance B (100 W, 10 hours) compare how?

    • Equal energy transferred
    • B transfers more
    • Zero energy used
    • A transfers more

  15. A 230 V appliance carries 4 A for 5 minutes. How much energy does it transfer?

    • 1.15 MJ
    • 46 kJ
    • 2.76 kJ
    • 276 kJ

  16. A device transfers 5000 J when 50 C of charge flows through it. What is the potential difference across it?

    • 250 V
    • 100 V
    • 10 V
    • 0.01 V

  17. Which change increases the energy transferred by an appliance in a given time?

    • Increasing power
    • Lowering voltage
    • Decreasing power
    • Adding resistance

  18. Which appliance transfers more energy when both operate for the same time?

    • 3000 W shower
    • Depends on voltage
    • 800 W lamp
    • Both equal

  19. A device at 230 V carries 2 A for 2 minutes. How much energy is transferred?

    • 27.6 kJ
    • 1.9 kJ
    • 460 kJ
    • 55.2 kJ

  20. A 5 kW appliance runs for 90 minutes. How much energy does it transfer?

    • 540 MJ
    • 3.3 MJ
    • 27 MJ
    • 270 kJ

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