Gujarati
4.Moving Charges and Magnetism
easy

An electron is moving on a circular path of radius $r$ with speed $v$ in a transverse magnetic field $B$. $e/m$ for it will be

A

$\frac{v}{{Br}}$

B

$\frac{B}{{rv}}$

C

Bvr

D

$\frac{{vr}}{B}$

Solution

(a) $r = \frac{{mv}}{{eB}} \Rightarrow \frac{e}{m} = \frac{v}{{rB}}$

Standard 12
Physics

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