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2.3 Domestic uses and safety

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Question 12
F

Why does the earth wire of an appliance that is working normally carry no current?

[1]
A

The earth wire is made from a material of very high resistance

B

The earth wire is only joined to the appliance when a fault happens

C

The earth wire is at a higher potential difference than the live wire

D

The earth wire and the metal case it is joined to are both at 0 V

Markscheme

2.3 Domestic uses and safety Questions

  1. GCSE
  2. /Physics
  3. /2.3 Domestic uses and safety

40 exam-style questions on AQA GCSE Physics 2.3 Domestic uses and safety, covering 2.3.1 Direct and alternating potential difference and 2.3.2 Mains electricity. Each one has a worked solution and a mark scheme showing where the marks go.

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