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You are watching: How is an electromagnet different from a bar magnet

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Electromagnets

Electromagnets space a different from permanent magnets. Electromagnets room made that coils of cable with electricity passing through them. Relocating charges produce magnetic fields, so once the coils of cable in one electromagnet have actually an electric current passing through them, the coils behave choose a magnet.

See more: What Makes Atoms Spread Out Around A Central Atom, Molecular Geometry

As soon as the power stops flowing, the coils nothing act favor a magnet anymore. Electromagnets are offered in a lot of electronic devices when magnetic pressures are only necessary for short periods the time.