An electron (mass $m$) is accelerated through a potential difference of $V$ and then it enters a magnetic field of induction $B$ normal to the field lines. The radius of the circular path is ($e$ = electronic charge).
- A$\sqrt{\frac{2 eV}{m}}$
- B$\sqrt{\frac{2 Vm}{eB^2}}$
- C$\sqrt{\frac{2 Vm}{eB}}$
- D$\sqrt{\frac{2 Vm}{e^2B}}$
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