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2.3 Domestic uses and safety

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Question 10
F

A hairdryer has a plastic case. Why can it be connected to the mains using a cable that has only two wires?

[1]
A

The neutral wire is able to do the job of the earth wire

B

Plastic has a much lower resistance than metal does

C

A plastic case cannot carry a current to the neutral wire

D

A plastic case cannot become live, so no earth wire is needed

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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