Question

An electron moves around the nucleus in a circular orbit of radius \(r\) and makes \(n\) revolutions per second. The value of equivalent current in the orbit is :

• A. \(\dfrac{e}{n}\)
• B. \(ne\)
• C. \(\dfrac{ne}{r}\)
• D. \(\dfrac{e}{nr}\)

Hint:

Whenever a charge \(q\) completes \(f\) revolutions per second, the equivalent current is \[ I=qf. \] Here \(q=e\) and \(f=n\), therefore \(I=en\).

Answer 1

The Correct Option is B