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1.2 Conservation and dissipation of energy

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Question 3

A solar water-heating panel has a useful power output to the water of 520 W. Energy is dissipated from the panel to the surroundings at a rate of 280 W. What is the efficiency of the panel as a percentage?

[1]
A

35%

B

54%

C

65%

D

0.65%

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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