# Describe how the strength and direction of a magnetic field around a bar magnet changes as you move from the poles to the middle of the magnet. Include in your answer what magnetic field lines tell us about both strength and direction.

> AQA A-Level Physics (7408) — 3.7.5 Magnetic Fields · Describe · 5 marks

## Mark scheme (5 marks)

1. Magnetic field is strongest at the poles
2. The field becomes weaker further from the poles / towards the centre/sides of the magnet
3. Field lines closer together indicate a stronger field / field lines further apart indicate a weaker field
4. Field lines run from north pole to south pole (outside the magnet)
5. The direction of a magnetic field line shows the direction a north pole would move / the direction the field acts at that point

## Key terms

- [magnetic field](https://www.gradenine.co.uk/glossary/magnetic-field)
- [field lines](https://www.gradenine.co.uk/glossary/field-lines)
- [poles](https://www.gradenine.co.uk/glossary/poles)

## Related

- [Revision notes for AQA A-Level Physics (7408)](https://www.gradenine.co.uk/learn)
- [How to answer "Describe" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

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Source: [GradeNine](https://www.gradenine.co.uk/q/describe-how-the-strength-and-direction-9ab0c69f) · Published by Druglandscape Ltd.