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1.2 Conservation and dissipation of energy

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Question 10

A battery torch transfers energy electrically from its battery. The useful output is light.

Energy transferEnergy
Total input900 J
Useful output as light540 J

Use the data in the table to calculate the efficiency of the torch.

[2]
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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