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An electron revolving in a circular ...

An electron revolving in a circular orbit of radius r with a frequency v and velocity v has an orbital magnetic moment `M_(0)` what will be its new magnetic moment if its frequency of revolution is doubled ?

A

`M_(0)`

B

`2M_(0)`

C

`(M_(0))/(2)`

D

`sqrt(M_(0))`

Text Solution

Verified by Experts

The correct Answer is:
B
The current associated with revolving electron is
`I=(e )/(T)=ev (because v=(1)/(T)) "and" I prop v`
The initial magnetic moment `M_(0) =IA`
and the new magnetic moment `M_(0) =IA=2IA=2M_(0)`
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