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8.3 Power and efficiency

8.3 Power and efficiency

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Question 1

An electric shower transfers 165 000 J165\text{ }000\text{ J}165 000 J of energy to the water flowing through it in a time of 45 s.

Calculate the power transferred by the electric shower.

Use the equation:

P=Et P = \frac{E}{t} P=tE​

Give your answer to 2 significant figures.

[3]
Markscheme

8.3 Power and efficiency Questions

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

26 exam-style questions on Edexcel GCSE Physics 8.3 Power and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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