![](https://www.ase.org.uk/sites/default/files/CDA_electromagnets.jpg)
This interactive resource covers the basic principles and some applications of electromagnets. An electromagnet is a magnet that works with electricity. It can be switched on and off. The coils are nearly always made of copper wire because copper is such an excellent electrical conductor. This e-source covers aspects of Magnet Fields surrounding permanent and electromagnets, and using magnetic field lines to represent and describe magnetic fields
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