Four point charges, each with Q = 7.2 µC, are arranged at the corners of a square of edge length 3.6 m. What is the electric potential at the center of the square?

Question

1 V

Answer 1

Find the potential from one corner, then multipy it by 4. Potential is a scalar, so it can be added.

V(one corner)=kQ/(3.6*sqrt2)