1. The problem statement, all variables and given/known data photo: http://s613.photobucket.com/user/Yan_Wa_Chung/media/02_zpsbdlufj1e.png.html 2. Relevant equations potential = kq1q2 / r 3. The attempt at a solution The answer is D. Which states "The electric potential in P is higher than Q" is correct. But my answer is B. By right hand rule, the current goes from Q to P. The formula of potential has a positive sign. So I think Q has a higher potential as work is needed to move the protons from P to Q. Why am I wrong?