An electric appliance is plugged into the mains supply using a fused plug. The normal operating current of the appliance is 4 A. The cable connected to the appliance is rated at 8 A. The fuses available are rated at 1 A, 3 A, 5 A and 13 A. Which fuse should be used?
1 A1\text{ A}1 A
3 A3\text{ A}3 A
5 A5\text{ A}5 A
13 A13\text{ A}13 A
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.