An unmagnetised steel cylinder is fixed to a low-friction trolley. A bar magnet is held a short distance in front of the trolley. The test is repeated after the bar magnet is turned around.
| Test | Pole of the bar magnet facing the cylinder | Movement of the trolley |
|---|---|---|
| 1 | north | towards the bar magnet |
| 2 | south | towards the bar magnet |
Explain the results.
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.