Question

A electron moves in a circle of radius 10cm with a speed of 4* 10^6 m/sec find the electric current at a point on the circle

Answer 1

Answer:

Approximately

${10}^{ - 12} \: amperes$

Explanation:

We know current equal to

$\frac{charge}{time}$

Here charge equals

$1.6 \times {10}^{ - 19} c$

Time period is

$\frac{2\pi \: r}{v}$

Also given radius is 10cm

and velociy is

$4 \times {10}^{6} m {s}^{ - 1}$

Therefore

Inserting these values we get current to be equal to

Approximately

${10}^{ - 12} amp$

Thank you!!