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1.2 Conservation and dissipation of energy

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Question 22
F

A hairdryer blows a stream of hot air. Which pair of energy transfers are the useful transfers for a hairdryer?

[1]
A

the energy transferred by sound and the energy stored thermally in the air

B

the energy stored thermally in the air and the energy in the kinetic store of the air

C

the energy in the kinetic store of the air and the energy transferred by sound

D

the energy stored thermally in the motor and the energy transferred by sound

Markscheme

1.2 Conservation and dissipation of energy Questions

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

40 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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