A charged particle moves through a magnetic field perpendicular to its direction. Then:

Options

A. Acceleration remain unchanged
B. velocity remains unchanged
C. speed of the particle remains unchanged
D. Direction of the particle remains unchanged

Answer

C

Explanation

When a charged particle moves through a perpendicular magnetic field, then a magnetic force acts on it which changes the direction of particle but does not alter the magnitude of its velocity (i.e. speed)