An unmagnetised steel washer is held midway inside a vertical non-magnetic tube. Steel is a magnetic material. A permanent magnet is first placed a short distance above the washer and is then placed the same distance below the washer. The same pole faces the washer in both positions.
Which statement describes the direction of the magnetic force on the washer?
The force is upwards when the magnet is above and downwards when the magnet is below.
The direction cannot be predicted, because it depends on which pole faces the washer.
There is no magnetic force in either position, because the washer is unmagnetised.
The force is downwards when the magnet is above and upwards when the magnet is below.
80 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.