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Power and efficiency

Power and efficiency

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Question 1

A 2.4 kW space heater is switched on for 2.5 hours2.5\text{ hours}2.5 hours.

Calculate the energy transferred by the heater.

Use the equation:

energy transferred=power×time \text{energy transferred} = \text{power} \times \text{time} energy transferred=power×time
A

0.96 J0.96\text{ J}0.96 J

B

0.96 kWh0.96\text{ kWh}0.96 kWh

C

6.0 J6.0\text{ J}6.0 J

D

6.0 kWh6.0\text{ kWh}6.0 kWh

Markscheme

Power and efficiency Questions

  1. GCSE
  2. /Physics
  3. /Power and efficiency

37 exam-style questions on OCR GCSE Physics Power and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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