A proton moves due north in a uniform magnetic field and experiences a magnetic force…
PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism
Problem
A proton moves due north in a uniform magnetic field and experiences a magnetic force directed due east. If the proton’s velocity is instantaneously reversed so that it now moves due south while the magnetic field remains unchanged, what will be the direction of the magnetic force on the proton?
(a) Due east
(b) Zero—there will be no magnetic force
(c) Due west
(d) Out of the page