State and explain why light switches in a bathroom are often operated by an insulating pull-cord rather than a standard wall-mounted switch.
State and explain how an earth wire works together with a fuse to protect a user if a fault causes the live wire to touch the metal casing of an appliance.
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.