A science museum display shows a computer model of the magnetic field around a permanent magnet. The same scale is used throughout the model.
The table gives the mean separation between neighbouring field lines at four positions.
| Position | Mean separation in mm |
|---|---|
| P | 3 |
| Q | 7 |
| R | 5 |
| S | 11 |
What position has the weakest magnetic field?
Position R
Position S
Position P
Position Q
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.