What is the electric potential at the point indicated with the dot in the figure?
E = V_c / d ?
V = E*s?
V = k * q / r ?
The Attempt at a Solution
I'm really rather confused by this problem. It requires vectors and angles, etc., I'm sure - but how does one factor in electric potential for this, for some arbitrary point (that has no charge, I presume?)? Can anyone guide me a bit?