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An electron of charge e is going around ...

An electron of charge e is going around in an orbit of radius R meters in a hydrogen atom with velocity v `m//sec`. The magnetic flux density associated with it at its centre is

A

`pi n er^2 `

B

`( pi nr^2)/(e )`

C

`( pi n e)/( r^2)`

D

`( pi e r ^2)/(n)`

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The correct Answer is:
A
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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (MOVING CHANGES & MEGNETISM)
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