1. The problem statement, all variables and given/known data The electric field on the dashed line in the figure vanishes at infinity, but also at two different points a finite distance from the charges. Identify the regions in which you can find E = 0 at a finite distance from the charges. Check all that apply: A)to the right of point C B)between points A and B C)to the left of point A D) between points B and C See Image: http://tinypic.com/r/15g8o6w/6 2. Relevant equations E=kq/r^2 3. The attempt at a solution I'm afraid that all I know is the formula, but I'm not sure how I'm supposed to apply it. Am I supposed to set E=0 or.. what? I feel like all I need is some direction in how to start and then I'll be able to get it. Thanks!