An electrical appliance is protected by a fuse connected in the live wire of the circuit.
Which statement correctly describes how the fuse protects the appliance and the user when the current exceeds the fuse's designed rating?
The fuse wire melts, which breaks the circuit and completely stops the flow of current.
The fuse wire increases its electrical resistance, reducing the current back to a safe, normal level.
The fuse diverts only the excess current through the earth wire of the appliance.
The fuse disconnects the neutral wire, causing the current to flow directly to the ground.
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.