Point charges and are placed at adjacent corners of a square for which the length of each side is 3.50 . Point is at the center of the square, and point is at the empty corner closest to . Take the electric potential to be zero at a distance far from both charges.
A. What is the electric potential at point due to and ?
B. What is the electric potential at point ?
C. A point charge = -3.00 moves from point to point . How much work is done on by the electric forces exerted by and ?