1. The problem statement, all variables and given/known data Two point charges of magnitude 2nC and -4nC are separated by 35 cm. The Coulomb constant is 8.98755e9 Newtons (Meters squared/ Coulombs squared). What is the potential difference between a point infinitely far away and a point midway between the charges? R= .175 2. Relevant equations E = Kc (q/r^2) Magnitude of electric field = Coulomb's Constant (value of the charge/ Distance squared) Delta V = Kc (q/r) Potential difference = Coulomb's Constant (value of the point charge)/ (distance to the point charge) 3. The attempt at a solution I tried running the two separate charges into the first formula (E1= 587, E2= -1174), then added them together, then ran the second formula with the difference of the first two (1761) and ended up with (9.04e13). Call me crazy, but isn't that quite a bit of voltage for such a tiny amount of charges? Where am I going wrong?