Electromagnet
Key Stage 3
Meaning
An electromagnet is a magnet made from a coil of wire wrapped around a soft iron core.
About Electromagnets
- Electromagnets only work when there is a direct current passing through the coil of wire.
- An electromagnet can be turned off and on.
- The strength of an electromagnet depends on; the number of coils of wire, the current through the wire and how easily the soft iron core can be magnetised.
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| The direction of the magnetic field can be changed by changing the direction of the current. |