# Explain how the generator effect is used in a thermal power station to produce an electrical current.

> Edexcel GCSE Physics (1PH0) — 13.1 Electromagnetic induction (Phys only) · Explain · 4 marks

> In a thermal power station, burning fossil fuels releases energy that is eventually used to generate electricity on a large scale.

## Mark scheme (4 marks)

1. The thermal energy from burning fuel heats water to produce steam (which is put under pressure to drive a turbine)
2. The turbine rotation causes a coil of wire to spin inside a magnetic field
3. There is relative motion between the coil (conductor) and the magnetic field
4. This induces a potential difference (and therefore a current flows in the coil / circuit) — this is the generator effect

## Key terms

- [generator effect](https://www.gradenine.co.uk/glossary/generator-effect)

## Related

- [Revision notes for Edexcel GCSE Physics (1PH0)](https://www.gradenine.co.uk/learn)
- [How to answer "Explain" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
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Source: [GradeNine](https://www.gradenine.co.uk/q/explain-how-the-generator-effect-is-0b559bb5) · Published by Druglandscape Ltd.