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10.4 Mains electricity

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Question 1

A freezer runs at a constant power. During 5.0 min of running, it transfers 45 kJ of electrical energy.

What is the power of the freezer while it is running?

[1]
A

9.0×103 W9.0\times10^{3}\ \text{W}9.0×103 W

B

1.5×102 W1.5\times10^{2}\ \text{W}1.5×102 W

C

6.7×10−3 W6.7\times10^{-3}\ \text{W}6.7×10−3 W

D

1.5×10−1 W1.5\times10^{-1}\ \text{W}1.5×10−1 W

Markscheme

10.4 Mains electricity Questions

  1. GCSE
  2. /Physics
  3. /10.4 Mains electricity

81 exam-style questions on Edexcel GCSE Physics 10.4 Mains electricity, covering 10.4.1 Direct and alternating current, 10.4.2 Live, neutral and earth wires; safety, 10.4.3 Mains wire potential differences and dangers, and 10.4.4 Power ratings and energy use. Each one has a worked solution and a mark scheme showing where the marks go.

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