A fuse is a safety device used in domestic electrical appliances to protect the wiring and user from excessive currents.
In which wire is the fuse placed and what does it do when it operates?
Live wire; the fuse melts and disconnects the circuit
Live wire; the fuse heats up and reduces the current to a safe value (not zero)
Neutral wire; the fuse melts and disconnects the circuit
Neutral wire; the fuse heats up and reduces the current to a safe value (not zero)
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.