1. The problem statement, all variables and given/known data What is the electric potential at the point midway between charges of 7.0 microC and 3.0microC which are 3.0 m apart? 2. Relevant equations Va=Va1+-Va2 V= Kq/r 3. The attempt at a solution I know how to do the calculations I am just not sure about how to add the potentials I am pretty sure that since they are both positive and the charge is halfway between them then the electrical potential will be the difference between the two is that correct?