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Name: Unknown
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: Around 1993


Question:
How does rotating charge create a magnet?

I know that a moving charge creates a magnetic field encircling its direction of motion, but why does a rotating charge produce a magnetic field when it is not changing its position?



Replies:
If you can have the charge rotating, it must have some extent, is the charge is at some radius, so the charge density is moving as the shell of the charge moves, this is the moving charge.

Sam Bowen


You may have in mind the idea of a particle with spin having a magnetic moment, which is not quite the same thing as a rotating charge. As far as I know, the reason is not terribly clear this is just a fundamental property of the particle.

Arthur Smith



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