advantage of electromagnet
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it is stronger and better than a permanent magnt
he main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.
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In an electromagnet, the magnetic field can be quickly changed by controlling the amount of electric current in winding.
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