A charge particle of mass m and charge g travels on a circular path of radius r that is perpendicular to the magnetic. field B. The time taken by the particle to complete one revolution is
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a
2πmqB
b
2πqBm
c
2πmqB
d
2πq2Bm
answer is A.
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Detailed Solution
For magnetic fieldmV2r=qVBor v=qBrmNow T =2πrV=2πrmqBr=2πmqB