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8.3 Power and efficiency

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Question 21

A conveyor carries parcels between two levels.

For every 28 kJ of energy supplied to the conveyor, 21 kJ is transferred usefully while moving the parcels.

Calculate how much of the 28 kJ supplied is transferred in unwanted ways.

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Markscheme

8.3 Power and efficiency Questions

  1. GCSE
  2. /Physics
  3. /8.3 Power and efficiency

128 exam-style questions on Edexcel GCSE Physics 8.3 Power and efficiency, covering 8.3.1 Power and 8.3.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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