1. The problem statement, all variables and given/known data A +10mC charge is placed 0.20 m from a -2.0mC charge. Where on the line joining the 2 charges is the a) electric field equal to zero? b) electric potential equal to zero? 2. Relevant equations 3. The attempt at a solution I am not sure, but I think that the answer to both of these questions is zero (because infinite is not an option). Am I wrong when I say that the electric field can't be zero because there are two forces pulling in the same direction, therefore they cannot cancel eachother out when between them. Also, the electric potential can't seem to equal zero because again, the forces are adding. I'm not as sure about that one though.