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1.2 Conservation and dissipation of energy

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Question 25

A battery-powered model boat has an efficiency of 0.75. During one run across a pond, 180 J of the energy transferred from its battery is dissipated.

How much energy is transferred from the chemical store of the battery during the run?

[1]
A

720 J

B

135 J

C

45 J

D

240 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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