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Power and efficiency

Power and efficiency

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Question 19

An electric motor has an input energy of 500 J.

The useful output energy is 150 J.

What is the efficiency of the motor?

A

3.33.33.3

B

0.30.30.3

C

303030

D

333333333

Markscheme

Power and efficiency Questions

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

37 exam-style questions on OCR GCSE Physics Power and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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