A gardener is using an electric hedge trimmer that is plugged into the mains supply.
The gardener accidentally cuts through the cable of the hedge trimmer, so the live wire inside the cable is exposed.
The gardener is standing on the ground.
Explain why the gardener could get an electric shock if they touch the exposed live wire.
The exposed live wire falls onto a wet metal fence that is in contact with the ground.
Explain why this connection between the live wire and earth could cause a fire.
The socket is protected by a circuit breaker.
Explain how the circuit breaker reduces these dangers.
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.