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1.7 Energy, work and power

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Question 288

Which row correctly describes the useful energy transfer in an electric motor and in an electric generator?

A

Electric motor: electrical to kinetic; Electric generator: kinetic to electrical

B

Electric motor: kinetic to electrical; Electric generator: electrical to kinetic

C

Electric motor: electrical to kinetic; Electric generator: electrical to kinetic

D

Electric motor: kinetic to electrical; Electric generator: kinetic to electrical

Markscheme

1.7 Energy, work and power Questions

  1. IGCSE
  2. /Physics
  3. /1.7 Energy, work and power

533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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