# Explain how a current-carrying wire placed in a magnetic field experiences a force, and state two factors that would increase the size of this force.

> Eduqas GCSE Physics — 8.2 Magnetic effects of currents and the motor effect · Explain · 4 marks

## Mark scheme (4 marks)

1. The current-carrying wire has its own magnetic field around it
2. This magnetic field interacts with the external magnetic field
3. One correct factor that increases the force — increasing the current
4. A second correct factor that increases the force — increasing the magnetic field strength

## Key terms

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

## Related

- [Revision notes for Eduqas GCSE Physics](https://www.gradenine.co.uk/learn)
- [How to answer "Explain" 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/explain-how-a-current-carrying-wire-placed-6000209b) · Published by Druglandscape Ltd.