An iron nail hangs from a magnet, and a second iron nail hangs from the first. The magnet is then taken away. What happens?
Both nails stay magnetised, so they remain joined together
The lower nail falls, because the induced magnetism is lost
The lower nail falls, because the two nails now repel each other
Both nails become permanent magnets with opposite poles
40 exam-style questions on AQA GCSE Physics 7.1 Permanent and induced magnetism, magnetic forces and fields, covering 7.1.1 Poles of a magnet and 7.1.2 Magnetic fields. Each one has a worked solution and a mark scheme showing where the marks go.