A charged particle of mass m and charge ...

A charged particle of mass `m` and charge `q` travels on a circular path of radius `r` that is perpendicular to a magnetic field `B`. The time takeen by the particle to complete one revolution is

`(2pimq)/(B)`

`(2piq^(2)B)/(m)`

`(2piqB)/(m)`

`(2pim)/(qB)`

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