NTA Abhyas JEE Main2020PhysicsMagnetic Properties of MatterPractice
An electron of charge e is moving in a circular orbit of radius r around a nucleus, at a frequency υ . The magnetic moment associated with the orbital motion of the electron is
Options
- A2 π υ e r 2
- Bπ υ r 2 2
- Cπ e υ r 2
- Dπ υ r 2 4
Correct answer
C. π e υ r 2
Step-by-step solution
The equivalent current due to the motion of the electron is i = e υ So, the magnetic moment will be M = i × π r 2 = π e υ r 2