Q. An electron enters a magnetic field whose direction is perpendicular to the velocity of the electron. Then
A) The speed of the electron will increase
B) The speed of the electron will decrease
C) The speed of the electron will remain the same
D) The velocity of the electron will remain the same
Explanation
(c) Force acts perpendicular to the velocity in a magnetic field, so speed of electron will remain same
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.