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An electron of charge e moves in a circu...

An electron of charge `e` moves in a circular orbit of radius `r` round a nucleus the magnetic field due to orbit motion off the electron at the site of the nucleus is `B`. The angular velocity `omega` of the electron is

A

`omega=(mu_(0)eB)/(4pir)`

B

`omega=(mu_(0)eB)/(pir)`

C

`omega=(4pirB)/(mu_(0)e)`

D

`omega=(2pirB)/(mu_(0)e)`

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