Q. When a charged particle enters a uniform magnetic field, its kinetic energy
A) Remains constant
B) Increases
C) Decreases
D) Becomes zero
Explanation
(a) Since $\overrightarrow{F}$ and $\overrightarrow{v}$ are perpendicular to each other work done by force is zero. Hence K.E. is constant
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.