Which statement is the correct representation of these electric field lines?

a. both plates are negatively charged.

b. both plates are neutral.

c. plate a is negatively charged and plate b is positively charged.

d. plate a is positively charged and plate b is negatively charged.

e. both plates are positively charged.

C. Plate A is negatively charged and plate B is positively charged.

Explanation:

The direction of the lines of an electric field represents the direction to which a positive test charge placed in that field would move. Therefore, since positive charges are repelled by positive charges and attracted by negative charges, this means that:

- Electric field lines point away from positive charges, and

- Electric field lines point towards negative charges

In the figure in the problem, we see that electric field lines go away from plate B and towards plate A. This means that:

- Plate B is positively charged

- Plate A is negatively charged