An electrical appliance is connected to a mains supply. The circuit must contain a switch and a safety fuse. Which of the following options describes the correct and safest connection of the switch and the fuse in the mains circuit?
The fuse is connected in parallel with the switch in the live wire.
Both the fuse and the switch are connected in series in the live wire, before the appliance.
The switch is connected in the live wire and the fuse is connected in the neutral wire.
The switch is connected in the live wire, and the fuse is connected in parallel across the live and neutral wires.
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.