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8.3 Power and efficiency

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Question 48
F

A motor receives 2.0 kJ of energy while lifting a 5.0 kg load through a vertical height of 12 m. Gravitational field strength is 10 N/kg. What is the efficiency of the motor?

[1]
A

30%30\%30%

B

83%83\%83%

C

70%70\%70%

D

3.0%3.0\%3.0%

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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