Magnetic Effects Of Current Question 314

Question: A particle is moving in a uniform magnetic field, then [BHU 1998]

Options:

A) Its momentum changes but total energy remains the same

B) Both momentum and total energy remain the same

C) Both will change

D) Total energy changes but momentum remains the same

Show Answer

Answer:

Correct Answer: A

Solution:

The charged particle moving in a magnetic field does not gain energy. However, the direction of its velocity changes continuously. Hence momentum changes.