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8.3 Power and efficiency

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Question 43
F

A pump has an input power of 500 W and an efficiency of 60%. It operates for 20 s. How much energy is transferred usefully?

[1]
A

4000 J4000\ \mathrm{J}4000 J

B

16 700 J16\,700\ \mathrm{J}16700 J

C

10 000 J10\,000\ \mathrm{J}10000 J

D

6000 J6000\ \mathrm{J}6000 J

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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