A hairdryer has a plastic case. It is connected to the mains using a cable that contains only two wires.
a.
Write down the names of the two wires in this cable.
[2]
b.
Explain why this hairdryer does not need an earth wire.
[2]
Markscheme
2.3 Domestic uses and safety Questions
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.