A Charged Particle Is Placed in an Electric Field That

Multiple Choice

A charged particle is placed in an electric field that varies with location. No force is exerted on this charge:

A) at locations where the electric field is zero
B) at locations where the electric field strength is 1/(1.6 * 10^-19) N/C
C) if the particle is moving along a field line
D) if the particle is moving perpendicular to a field line
E) if the field is caused by an equal amount of positive and negative charge