Lesson T1.2.3

T1.2.3 Domestic fuel bills and costs Quiz: KS3 Physics, Unit 1

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson T1.2.3, Domestic fuel bills and costs: 20 multiple choice questions for the KS3 Physics (National Curriculum), Unit 1: Energy, written with Revision Ninja.

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The 20 questions

  1. What unit is domestic electricity usually charged in?

    • Kilowatt-hour
    • Volt-ampere
    • Megajoule
    • Watt

  2. Electricity costs 30p per kWh. A fridge uses 5 kWh in a day. What is the daily cost?

    • £15
    • 50p
    • 15p
    • £1.50

  3. A 2 kW heater runs for 4 hours at 25p per kWh. What does it cost?

    • £20.00
    • £2.00
    • £8.00
    • £0.50

  4. A gas meter records 500 kWh at 6p per kWh. What is the cost?

    • £3
    • £0.30
    • £300
    • £30

  5. Which home improvement best reduces heating energy loss?

    • Thick curtains
    • New radiators
    • Wall insulation
    • Double glazing

  6. Which appliance would cost least per hour to run?

    • A 1200 W heater
    • An 800 W microwave
    • A 10 W LED bulb
    • A 2000 W kettle

  7. What type of fee is a standing charge on an energy bill?

    • Fixed daily fee
    • Government energy tax
    • One-off connection fee
    • Variable usage fee

  8. What term describes the fixed daily amount charged on a domestic energy bill?

    • Unit price
    • Service tax
    • Tariff rate
    • Standing charge

  9. A 100 W TV runs for 5 hours at 30p per kWh. What does it cost?

    • £1.50
    • 5p
    • 15p
    • 30p

  10. A household uses 2 kWh per day at 20p per kWh. What is the cost over 30 days?

    • £2.40
    • £1.20
    • £12
    • £120

  11. Why do energy companies bill in kilowatt-hours instead of joules?

    • Joules are outdated
    • Easier to measure
    • Practical size values
    • Government legislation

  12. Which appliance uses more total electrical energy?

    • 5 kW for 30 minutes
    • 1 kW for 5 hours
    • 2 kW for 2 hours
    • 3 kW for 1 hour

  13. A dishwasher uses 1.2 kWh per cycle. What is the cost per cycle at 25p per kWh?

    • £1.20
    • 30p
    • 3p
    • 12p

  14. What two quantities determine the energy transferred by an appliance?

    • Voltage and current
    • Resistance and charge
    • Current and time
    • Power and time

  15. A bill shows 300 kWh used over 90 days at 25p per kWh, plus a standing charge of £10 for the same period. What is the total?

    • £75
    • £95
    • £85
    • £300

  16. A household uses an average of 12 kWh per day. How many kWh does it use in a week?

    • 84 kWh
    • 12 kWh
    • 70 kWh
    • 96 kWh

  17. If the price per kWh doubles while energy use stays constant, what happens to the cost?

    • It quadruples
    • It halves
    • It stays the same
    • It doubles

  18. Which saves more energy when switched off for their respective times?

    • 500 W heater for 1 minute
    • 2 kW fire for 10 minutes
    • 100 W bulb for 1 hour
    • 60 W bulb for 2 hours

  19. A home uses 9000 kWh a year at 28p per kWh, plus a standing charge of £100 a year. What is the annual bill?

    • £2520
    • £2100
    • £9000
    • £2620

  20. A 4 kW shower runs for 15 minutes. How much energy does it use?

    • 0.25 kWh
    • 1 kWh
    • 15 kWh
    • 4 kWh

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