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8.3 Power and efficiency

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Question 10

An electric toaster has a power rating of 800 W while it is working normally.

Which statement correctly interprets this rating?

[1]
A

It transfers 800 J800\ \mathrm{J}800 J of energy altogether whenever it is switched on.

B

It transfers 800 J800\ \mathrm{J}800 J of energy each second.

C

It transfers 800 kJ800\ \mathrm{kJ}800 kJ of energy each second.

D

It transfers 800 J800\ \mathrm{J}800 J of energy each minute.

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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