Which of the following observations would definitely prove that an unmarked metal bar is a permanent magnet?
It attracts a steel paperclip.
It is attracted to the north pole of a known bar magnet.
It repels the north pole of a known bar magnet.
It conducts an electric current when placed in a circuit.
169 exam-style questions on CIE IGCSE Physics Simple phenomena of magnetism, covering Simple phenomena of magnetism. Each one has a worked solution and a mark scheme showing where the marks go.