An electromagnet is a device in which moving electric charges (current) in a coil of wire create a magnet. what’s one advantage of using electromagnets in devices?
1.electromagnets have a strong, constant magnetic field.
2.electromagnets are more powerful than permanent magnets.
3.electromagnets don’t need a source of electricity to work.
4.electromagnets can easily be turned on and off.
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An electromagnet is a device in which moving electric charges (current) in a coil of wire create a m...
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