A positive point charge q = +2.36 nC is located at x = 1.20 m and a negative charge of -2q = -4.72 nC is located at the origin as in the following figure.
(a) Sketch the electric potential versus x for points along the x-axis in the range -1.50 m < x < 1.50 m.
(b) Find a symbolic expression for the potential on the x-axis at an arbitrary point P between the two charges. (Use the following as necessary: x.)
(c) Find the electric potential at x = 0.612 m.
(d) Find the point along the x-axis between the two charges where the electric potential is zero.