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Why the electric bell will not work if the Electromagnet is replaced with a permanent magnet?
As electromagnet are temporary magnets so we can easily change its properties. An electric bell uses an electromagnet which is not a permanent magnet.So the given statement in the problem that a permanent magnet is used in an electric bell is false
Electromagnets are temporary magnets. It is composed of a metal core and a loop of coil around it. It acts as a magnet when there is a current running through the coil and acts nothing if there is no current running through the coil.
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