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8.3 Power and efficiency

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Question 40
F

A student of mass 50 kg climbs a staircase of vertical height 2.4 m in 6.0 s. Gravitational field strength is 10 N/kg. What is the mean useful power output?

[1]
A

83 W83\ \mathrm{W}83 W

B

200 W200\ \mathrm{W}200 W

C

1200 W1200\ \mathrm{W}1200 W

D

20 W20\ \mathrm{W}20 W

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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