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magnet

Gurudon
in Modern and Theoretical Physics

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i have heard that magnetic property of any substance is due to the motion of free electron in its atomic structure . can anybody explain about it in detail ?????????/

Only in the case of an electromagnet do the free electrons play the only part. In the case of magnetic materials such as the Iron core of an electromagnet, or a permanent magnet things are much more complicated and involve some Quantum Mechanics.

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