CAIE IGCSE Physics Kilowatt-Hours and Electricity Cost
Practise defining the kilowatt-hour, calculating appliance energy from power and time, and multiplying energy in kWh by a tariff to find cost.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- define one kilowatt-hour as the energy transferred by a 1 kW appliance operating for one hour
- calculate energy in kWh by multiplying power in kilowatts by operating time in hours
- multiply energy in kWh by the price per unit, converting watts or minutes before calculating cost
4.2.5.4—Kilowatt-hour (kWh) and calculate the question 1
[Maximum number: 1]
Define the kilowatt-hour (kWh) in words.
energy transferred in one hour at a rate of transfer of 1 kW
B1
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