# Explain how radio waves are produced and what happens in a receiver when radio waves are absorbed.

> AQA GCSE Physics (8463) — 4.6.2 Electromagnetic waves · Explain · 4 marks

## Mark scheme (4 marks)

1. Radio waves are produced by oscillations in electrical circuits
2. When radio waves are absorbed (by a receiver/aerial) they create/induce a current
3. The current produced is alternating (AC)
4. The alternating current is at the same frequency as the radio waves

## Key terms

- [radio waves](https://www.gradenine.co.uk/glossary/radio-waves)

## Related

- [Revision notes for AQA GCSE Physics (8463)](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-radio-waves-are-produced-0f240e3a) · Published by Druglandscape Ltd.