magnets and electricity

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Electromagnets• An electromagnet is a

magnet made by winding a wire with a current around on an iron bar– Electromagnets: found

in doorbells, computers, speakers, and telephones

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Electromagnets

• Some cranes have electromagnets that can pick up heavy loads of iron or steel – When the operator turns the electromagnet off,

the load drops to the ground! – http://

www.absorblearning.com/media/item.action?quick=4v

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Bill Nye: Magnetism