Q. A particle of mass $m$, charge $Q$ and kinetic energy $T$ enters a transverse uniform magnetic field of induction $\overrightarrow{B}$. After 3 seconds the kinetic energy of the particle will be
A) $T$
B) $4\ T$
C) 3 $T$
D) $2\ T$
Explanation
(a) When a charged particle having K.E. $T$ is subjected to a transverse uniform magnetic field, it describes a circular path in the magnetic field without any change in its speed. Thus, the K.E. of the charged particle remains $T$ at all times
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.