1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution we know the electric field at A is 0, so the force is 0. V = work / charge = U / q = F⋅D / q the electric field at B is 4 times 3.6N/C = 14.4 N/C since E = F/q, F = Eq force, F = 14.4q at point b V = 14.4q⋅d/q the q's cancel, d is the distance from A to b which is 4.47 V = 14.4 ⋅ 4.47 = 64.39 is this correct?