Four point charges of equal magnitude are arranged at the corners of a square as

Question

Four point charges of equal magnitude are arranged at the corners of a square as shown in the figure. Positive charges are indicated by "+" and negative charges are indicated by "-".

1. Select the only true statement about the electric potential at points a, b and c.
The electric potential equals zero at points b and c, but not at point a.
The electric potential equals zero at point c, but not at points a and b.
The electric potential equals zero at points a, b and c.
The electric potential equals zero at points a, but not at points b and c.
The electric potential equals zero at points a and b, but not at point c.
The electric potential equals zero at point b, but not at points a and c.
The electric potential equals zero at none of these points.
The electric potential equals zero at points a and c, but not at point b.

2.What is the direction of the electric field at point b?
a. Down (to the bottom of the page).
b. The electric field is zero at this point.
c. Up (to the top of the page).
d. To the right.
f. To the left

I got one try left for second problem. Please show your work and give me correct answer please please!!!

Explanation / Answer

1) d) The electric potential equals zero at points a, but not at points b and c.

2) a. Down (to the bottom of the page).

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