An unmarked bar magnet is tested to determine which of its ends is the south pole. Which of the following procedures would successfully identify the south pole?
Placing the magnet near an unmagnetized iron block
Placing the magnet near a known south pole of another magnet
Placing the magnet near a piece of copper foil
Placing the magnet near a plastic ruler
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.