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1. |
differentiate between bar magnet and permanent magnet |
Answer» <p>Bar magnets are permanent magnets and will never looses their magnetism. They are always switched on. The orientation of the poles remains fixed. </p><p>Electromagnets are temporary magnets and work only when an electric current is passing through it. The orientation of the poles depends upon the direction of the current.</p> <p>differences between MCB and fuse</p> <p>please tell</p> | |