A proton is moving in an electric field. The direction of the acceleration of the proton is
A) in the direction the proton is moving.
B) opposite the direction the proton is moving.
C) perpendicular to the direction the proton is moving.
D) in the direction of the electric field.
E) opposite the direction of the electric field.

Question

Quizplus · Accepted Answer

The acceleration of a charged particle in an electric field is directly proportional to the strength of the electric field and has the same direction as the electric field. Therefore, the direction of the acceleration of the proton is in the direction of the electric field.

A Proton Is Moving in an Electric Field