There are three charges 5, 5, and -5 micro coulomb at the corners of a triangle 10.0 centimeter in length of each side At the center a charge of -10 micro coulomb is located.
A. Find the scalar field, V, at the center of square due to the other three?
B. Find the potential energy of the -10 micro coulomb due to the other three?
C. Find the energy to bring fourth charge to its location in the triangle from infinity?