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Difference between solenoid and permanent magnet.

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Difference between solenoid and permanent magnet.

Posted by Sumit Gaur 4 years ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years ago

1. A solenoid is a temporary magnet as it can readily be demagnetized by stopping the current through the solenoid whereas a bar magnet which is a permanent magnet cannot be demagnetized.
2. A solenoid produce a strong magnetic field whose strength can be changed by changing the current through it whereas the magnetic field of a permanent magnet is comparatively weak and its strength cannot be changed.
3. The polarity of a solenoid can be reversed by changing the direction of current through it whereas the polarity of permanent magnet is fixed and cannot be easily reversed.

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