1. The problem statement, all variables and given/known data Electric charge is distributed along each side of a square. Two adjacent sides have positive charge +Q on each, two sides have -Q on each. What are the x and y components of the net electric field at the center of the square? (Each side has length "a"). 2. Relevant equations E=F/q ? F=k*q1*q2/r^2 k=9E9Nm^2/C^2 3. The attempt at a solution Trying to come up with a differential equation? I don't know how to begin with having 4 sides.