Question
Question: A particle is moving in a uniform magnetic field, then...
A particle is moving in a uniform magnetic field, then
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
Answer
Its momentum changes but total energy remains the same
Explanation
Solution
The charged particle moving in a magnetic field does not gain energy. However, the direction of its velocity changes continuously. Hence momentum changes