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8.3 Power and efficiency

8.3 Power and efficiency

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Question 15

During a power outage, a domestic backup battery transfers energy to a house at an average rate of 6.0 kW.

The fully charged backup battery can transfer a total of 86.4 MJ86.4 \text{ MJ}86.4 MJ of energy before it is completely discharged.

Calculate the time taken for the battery to transfer this energy.

Give your answer in hours.

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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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