How Does Electric Field Direction Affect Work on a Negative Charge?

[RoboNerd]

1. Homework Statement

Hi everyone, I am having trouble solving this question. I know that the right answer is d.

Homework Equations

No equations here, only conceptual stuff.

The Attempt at a Solution

Say I have the following points: A and B

A. B.

The negative charge is moving to the right, and if the electric field does positive work on it, then the electric force is going to the right, which means that the electric field is pointed leftwards from point B to point A.

This means the negative charge is moving from low to high potentials.

I thus would think that the answer is (C), increases, but the right answer apparently is (D) increases.

Could anyone please help me figure out why this is the case?

Thanks in advance for the help, and make it a great day!

 

[TSny]

Yes, the charge moves from lower to higher potential. But, how do you relate the change in potential energy to the change in potential?

 

[Cutter Ketch]

To be even more explicit than TSny, potential energy and potential are not the same thing. This problem is a test to see if you know the difference.