Q. A positively charged particle moving along $x -$axis with a certain velocity enters a uniform electric field directed along positive $y -$axis. Its
A) Vertical velocity changes but horizontal velocity remains constant
B) Horizontal velocity changes but vertical velocity remains constant
C) Both vertical and horizontal velocities change
D) Neither vertical nor horizontal velocity changes
Explanation
(a) There is only acceleration in $y$ direction due to electric field in that direction and no acceleration in $x$ direction
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.