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Power and efficiency

Power and efficiency

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Question 12

Electrical energy transferred by an appliance can be measured in Joules (J\text{J}J).

How do you calculate this energy in Joules?

A

Divide power in watts by time in seconds.

B

Divide power in kilowatts by time in hours.

C

Multiply power in watts by time in seconds.

D

Multiply power in kilowatts by time in hours.

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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