Question
Physics Question on Electromagnetic waves
The source of electromagnetic wave can be a charge.
A
Moving with a constant velocity
B
Moving in a circular orbit
C
At rest
D
Moving parallel to the magnetic field
Answer
Moving in a circular orbit
Explanation
Solution
Charges moving in a circular orbit undergo centripetal acceleration hence emit em waves. Or when electron jumps from one higher stationary orbit to another lower stationary orbit emits em radiation.