A student wants to test if an iron bar is a permanent magnet. She brings a known bar magnet close to the iron bar.
Which of the following observations would prove that the iron bar is a permanent magnet?
The iron bar repels one of the poles of the known bar magnet.
The iron bar attracts one of the poles of the known bar magnet.
The iron bar attracts a piece of copper.
The iron bar is attracted to both poles of the known bar 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.