Draw the circuit symbol for an open switch.
Describe how the earth wire protects a user from an electric shock if the live wire touches the metal casing of an appliance.
A mains electricity circuit has three wires: live, neutral, and earth.
In which of these is a switch connected? Tick one box.
135 exam-style questions on CIE IGCSE Physics Electrical safety, covering Electrical safety. Each one has a worked solution and a mark scheme showing where the marks go.