How solenoid can be more preferably than a permanent magnet? explain with situation or example.
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Solenoid behaves like a magnet as it has a soft iron core with insulated copper wire over it. ... If the north pole of a bar magnet is brought near the negative terminal of the battery, then the solenoid repels the bar magnet as like poles repel each other similarly the other end behaves as a south pole.
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