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3 Conservation of energy

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Question 41
F

A motor receives 0.80 kJ of energy. It transfers 120 J by heating and 40 J by sound. All the remaining energy is transferred usefully.

What is the efficiency of the motor?

[1]
A

20%20\%20%

B

85%85\%85%

C

95%95\%95%

D

80%80\%80%

Markscheme

3 Conservation of energy Questions

  1. GCSE
  2. /Physics
  3. /3 Conservation of energy

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