A positively charged test particle is released from rest in a uniform electric field. The only force experienced by the particle is the clectric force in that ficld.

(a) Describe the trajectory the particle follows.

(b) How does the trajectory change, if at all, if the particle is given an initial velocity in the direction of the electric field?

(c) How does the trajectory change if the particle has an initial velocity that makes an angle \(\theta eq 0\) with the electric field?

(d) Repeat parts \(a-c\) for a negatively charged test particle.