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Magnet moving inside a coil
Age 11 · Physics
When a magnet moves inside a coil of wire, it pushes the tiny electrons in the metal along. That flow of electrons is an electric current, and it can light a bulb.
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Age 11: open this week
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In the picture
- Bar magnet: a magnet that turns on its axle inside the coil
- Coil of copper wire: many turns of wire wrapped into a tube
- Small bright dots travelling along the wire away from the coil
- Light bulb: glows when the current reaches it
Examples
- A bicycle dynamo lights its lamp when the turning wheel spins the magnet.
- A power station generator spins magnets inside coils to make electricity for homes.
Key takeaways
- Moving a magnet near a wire pushes electrons through it.
- The faster the magnet moves, or the more turns of wire, the stronger the current.
Quiz: Magnet moving inside a coil (Age 11)
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What happens when a magnet moves inside a coil of wire?
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What makes the electric current stronger?
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What is the flow of electrons through the wire called?
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