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A particle of mass M and charge Q moving...

A particle of mass `M` and charge `Q` moving with velocity `vec(v)` describe a circular path of radius `R` when subjected to a uniform transverse magnetic field of induction `B`. The work done by the field when the particle completes one full circle is

A

`(mv^(2))/(R )2pi R`

B

zero

C

`BQR pi R`

D

`BQv 2pi R`

Text Solution

Verified by Experts

The correct Answer is:
B
When particle descirbes circular path in a magnetic field its velocity is always perpendicular to the magnetic force thus work done by the fielf is zero
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