Question

If a particle is moving in a uniform magnetic field, then
a. Total energy changes but momentum remains same
B. It's momentum changes but total energy remains the same
c. Both momentum and total energy remains the same
d. Both momentum and total energy changes

Answer 1

Answer:

Total energy changes but momentum remains same

Answer 2

If a particle is moving in a uniform magnetic field, then B. it's momentum changes but, the total energy remains the same.

1. In a magnetic field with a uniform field, a charged particle moves on a circular path. The force applied to the charged particle is always perpendicular to the speed. Due to this, the work done is zero.

2. However, there is a change in velocity of the charged particle on the circular path and due to this, the momentum changes. The charged particle does not gain any energy.

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