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Magnetics question

2005 · Shift 0 · Q128
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  5. /2005 · Shift 0 · Q128

Magnetics question

2005 · Shift 0 · Q128

JEE MainPhysicsMagneticsMCQ+4 / −1
A charged particle of mass mmm and charge qqq travels on a circular path of radius rrr that is perpendicular to a magnetic field B.B.B. The time taken by the particle to complete one revolution is
  1. A
    2πq2Bm{{2\pi {q^2}B} \over m}m2πq2B​
  2. B
    2πmqB{{2\pi mq} \over B}B2πmq​
  3. C
    2πmqB{{2\pi m} \over {qB}}qB2πm​
  4. D
    2πqBm{{2\pi qB} \over m}m2πqB​
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