A source consists of three charged particles located at the vertices of a square (see figure below), where the square has sides of length 0.213 m. The charges are q1 = 33.0 nC, q2 = −64.0 nC, and q3 = 54.5 nC. Find the electric potential at point A located at the fourth vertex.

Question

A source consists of three charged particles located at the vertices of a square (see figure below), where the square has sides of length 0.213 m. The charges are q1 = 33.0 nC, q2 = −64.0 nC, and q3 = 54.5 nC. Find the electric potential at point A located at the fourth vertex.
www.webassign.net/katzpse1/26-p-032.png

bobpursley · Answer

potential is a acalar, not a vector. So find the potential from each corner (two of them are the same distance), and add. V=v1+V2+V3=