MagnetismHard
Question
A particle of mass M and charge Q moving with velocity 
describes a circular path of radiusR 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
describes a circular path of radiusR when subjected to a uniform transverse magnetic field of induction B. The work done by the field when the particle completes one full circle isOptions
A.
2πR
2πRB.zero
C.BQ2πR
D.BQv2πR
Solution
Since the particle completes one full circle, therefore displacement of particle = 0
Work done = force × displacement = 0
Work done = force × displacement = 0
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