In the figure point P is at a distance d1 = 3.95 m from particle 1 (q1 = -6e) and distance d2 = 2.08 m from particle 2 (q2 = +6e), with both particles fixed in place. (a) WithV =0 at infinity, what is V at P? If we bring a particle of charge q3 = +6e from infinity to P, (b) how much work do we do and (c) what is the potential energy of the three-particle system?
https://edugen.wileyplus.com/edugen/courses/crs7165/art/qb/qu/c24/fig24_59.gif