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8.3 Power and efficiency

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Question 1
F

An electric fan is switched on.

a.

State what is meant by power.

[1]
b.

Give the unit of power.

[1]
c.

Complete the sentence.

One watt is equal to one ____________ per second.

[1]
d.

The fan transfers 1800 J of energy in 60 s.

Calculate the power of the fan.

[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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