Which of the following observations is the only definitive test to prove that a metal bar is a permanent magnet?
The bar is attracted to a non-magnetic metal.
The bar repels a known pole of a permanent magnet.
The bar is attracted to a known pole of a permanent magnet.
The bar attracts both poles of a permanent magnet.
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.