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8.3 Power and efficiency

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Question 27

An electric lawn mower transfers 360 kJ of energy in 5.0 minutes5.0\ \mathrm{minutes}5.0 minutes. What is the power of the lawn mower?

[1]
A

72 kW72\ \mathrm{kW}72 kW

B

1200 kW1200\ \mathrm{kW}1200 kW

C

1.2 kW1.2\ \mathrm{kW}1.2 kW

D

1800 kW1800\ \mathrm{kW}1800 kW

Markscheme

8.3 Power and efficiency Questions

  1. GCSE
  2. /Physics
  3. /8.3 Power and efficiency

128 exam-style questions on Edexcel GCSE Physics 8.3 Power and efficiency, covering 8.3.1 Power and 8.3.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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