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1.2 Conservation and dissipation of energy

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Question 35

During a short period of use, an electric lawnmower is supplied with 6000 J of energy. 25% of the energy supplied to the lawnmower is dissipated to the surroundings. How much energy is transferred usefully by the lawnmower?

[1]
A

4500 J

B

24000 J

C

7500 J

D

1500 J

Markscheme

1.2 Conservation and dissipation of energy Questions

  1. GCSE
  2. /Physics
  3. /1.2 Conservation and dissipation of energy

104 exam-style questions on AQA GCSE Physics 1.2 Conservation and dissipation of energy, covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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