A proton moves with constant speed through a region of uniform magnetic field
PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism
Problem
A proton moves with constant speed through a region of uniform magnetic field. Under which of the following conditions will the proton experience no magnetic force?
(a) Its speed is constant, so the net force on it must be zero.
(b) Its velocity is perpendicular to the magnetic field lines.
(c) Its velocity is parallel to the magnetic field lines.
(d) Because magnetic forces do no work, the proton experiences no magnetic force in a uniform field.