Electrical appliances can be powered by a battery or by the mains supply.
State the type of current supplied by a battery.
State the frequency of the UK domestic mains supply.
State the approximate potential difference of the UK domestic mains supply.
Describe how the movement of charge in an alternating current is different from the movement of charge in a direct current.
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.