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An electron moving in a circular orbit...

An electron moving in a circular orbit of radius `r` makes `n` rotation per secound. The magnetic field produced at the centre has magnitude

A

`mu_(0) omegae//2r`

B

`mu_(0) omega e//2pir`

C

`mu_(0) omega e//4pir`

D

`mu_(0) omega^(2)e//4pir`

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The correct Answer is:
A
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