Question

An electron is moving in a circular path with a radius of $10$ cm with a constant speed of $5\ast {10}^6$ $m/s$. The current constituted in the circular path is

Answer 1

$I=\frac{q}{t}$

given values,

$\Rightarrow$ Radius $=10cm=0.1m$

Velocity $=5\times {10}^{6}m/s$

$\Rightarrow T=\frac{2\pi r}{v}$

$=\frac{2\times 3.14\times 0.1}{5\times {10}^6}$

$=0.125\times {10}^{-6}$

$\Rightarrow I=\frac{q}{t}$

$=\frac{1.6\times {10}^{-19}}{0.1256\times {10}^{-6}}$

$=12.738\times {10}^{-13}$

$=1.273\times {10}^{-12}A$

Hence, the answer is $1.273\times {10}^{-12}A.$