What is an electromagnet ? State its one aplication .
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Electromagnets are used in all kinds of electric devices, including hard disk drives, speakers, motors, and generators, as well as in scrap yards to pick up heavy scrap metal. They're even used in MRI machines, which utilize magnets to take photos of your insides!
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An electromagnet is a temporary magnet produced by current flowing through a solenoid with soft iron core. The magnetic field remains only when the current is flowing, in absence of current it has no magnetic effect.
They are used in mri machines and other electronic devices.
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