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An electron moving in a circular orbit o...

An electron moving in a circular orbit of radius makes n rotations per second. The magnetic field produced at the centre has magnitude :

A

`(mu_(0)"ne")/(2pi r)`

B

Zero

C

`(mu_(0)n^(2)e)/(r)`

D

`(mu_(0)"ne")/(2r)`

Text Solution

Verified by Experts

Equivalent current. `I=(e)/(T)=(e)/((1)/(m))=en`
Hence, `B=(mu_(0)I)/(2r)=(mu_(0)"ne")/(2r)`
The option D is correct.
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