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An electron of mass 'm' charge e enters ...

An electron of mass 'm' charge e enters into a uniform magnetic field region of induction B and is found to describe a circle of radius r. The magnetic field induction B can be calculated from the equaiton

A

`(mv^2)/r`=eVB sin theta`

B

`(mv^2)/r=(sintheta)/(eVB)`

C

`(mv^2)/r=eVB`

D

`(mv^2)/r=(VB)/e`

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