In a household mains electric circuit, where must a single-pole switch or a circuit breaker be connected to ensure that the appliance is safely isolated from the high voltage when it is switched off?
the earth wire only
the live wire only
the neutral wire only
the neutral wire and the earth wire
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.