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8.3 Power and efficiency

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Question 9

A sandwich toaster has a power rating of 750 W. It is switched on for 240 s.

a.

Give the energy transferred by the sandwich toaster in one second.

[1]
b.

The energy transferred can be calculated using

E=P×tE = P \times tE=P×t

Calculate the energy transferred while the sandwich toaster is switched on.

[2]
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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