1. The problem statement, all variables and given/known data 1.Rank the electric potential at the four points A, B, C, and D from greatest to least? 2.The E Field at C points which way? 3.The force on a -4 nC charge placed at A is in what direction? 2. Relevant equations no equations needed. 3. The attempt at a solution 1. when i was ranking their strength i thought the farther they were the stronger they were. But now i am thinking the closer they are to the charges the stronger they will be. I think the ranking is B, A, C=D. Could someone tell me if this is right or wrong. 2. I thought that C will be pointing to the top right as its on the 15+line and positive pushes away. But that was wrong. Any suggestions? 3. I thought it would point to the bottom left because negative would be attracted to the +15 but again that was wrong. Could some help on this.