An electrical appliance with a metal outer casing must be connected safely to the mains electricity supply.
Which statement is correct?
It must be connected with a fuse and an earth wire.
It can be connected with a fuse only.
It can be connected with an earth wire only.
It does not need a fuse or an earth wire.
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.