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8.3 Power and efficiency

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Question 2

An airport baggage conveyor operates for 20 s. Its drive exerts a constant force of 900 N on the baggage, which moves 24 m in the direction of the force. The mean power dissipated by the drive is 420 W. What is the total input power of the drive?

[1]
A

1080 W1080\ \mathrm{W}1080 W

B

1500 W1500\ \mathrm{W}1500 W

C

660 W660\ \mathrm{W}660 W

D

420 W420\ \mathrm{W}420 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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