A particle of charge q and mass m moves on a circular path of radius r in a plane inside and normal to a uniform magnetic field B. The time taken by this particle to complete one revolution is ______ . (A) 2πmq / B(B) 2πq²B / m (C) 2πqB / m (D) 2πm / Bq
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A particle of mass is moving towards the circle and includes radius at a normal acceleration varying with time as 2.
This denotes the constant value and finding time dependence of average results with t seconds after beginning of the motion.
Therefore, revolution has 2πq²B as compare with mass value.
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