An electric heater is connected to a mains supply via a live wire and a neutral wire. For safety, both a mains switch and a fuse must be connected in the circuit.
In which wire(s) should the switch and the fuse be connected?
Both the switch and the fuse must be in the live wire.
Both the switch and the fuse must be in the neutral wire.
The switch must be in the live wire, and the fuse must be in the neutral wire.
The switch must be in the neutral wire, and the fuse must be in the live 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.