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3.2 Dissipation and efficiency

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Question 8

A domestic solar array converts 18% of the solar energy it receives into useful electrical energy.

Calculate the total solar energy that must fall on the solar array to produce 5.4 MJ5.4\text{ MJ}5.4 MJ of electrical energy.

[2]
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3.2 Dissipation and efficiency Questions

  1. GCSE
  2. /Physics
  3. /3.2 Dissipation and efficiency

38 exam-style questions on Edexcel GCSE Physics 3.2 Dissipation and efficiency, covering 3.2.1 Dissipation of energy, 3.2.2 Reducing unwanted energy transfers, 3.2.3 Efficiency, and 3.2.4 Increasing efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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