Which statement correctly describes the primary function of an earth wire in a domestic electrical appliance with a metal casing?
to prevent the appliance from drawing too much current during normal use
to provide a low-resistance path to ground, causing a large current to flow and blow the fuse if a fault occurs
to increase the total electrical resistance of the appliance's circuit
to store electrical energy to protect the appliance from sudden power cuts
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.