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3.2 Dissipation and efficiency

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Question 16
F

A motor has an efficiency of 75%. It transfers 450 J usefully in one operation.

How much energy is dissipated during the operation?

[1]
A

113 J113\ \mathrm{J}113 J

B

338 J338\ \mathrm{J}338 J

C

600 J600\ \mathrm{J}600 J

D

150 J150\ \mathrm{J}150 J

Markscheme

3.2 Dissipation and efficiency Questions

  1. GCSE
  2. /Physics
  3. /3.2 Dissipation and efficiency

100 exam-style questions on Edexcel GCSE Physics 3.2 Dissipation and efficiency, covering 3.2.1 Dissipation of energy, 3.2.2 Reducing unwanted energy transfers, 3.2.3 Efficiency, and 3.2.4 Increasing efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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