A charge of +3.00 C is at the origin, and a charge of 3.00 C is on

A charge of +3.00 μC is at the origin, and a charge of –3.00 μC is on the x axis at x = 6.00 m.

(a) Find the potential on the x axis at x = 3.00 m.

(b) Find the electric field on the x axis at x = 3.00 m.

(c) Find the potential on the x axis at x = 3.01 m, and compute –ΔV/Δx, where ΔV is the change in potential from x = 3.00 m to x = 3.01 m and Δx = 0.01 m. Compare your result with your answer to part (b).