Two charges -q and +q are located at points (0,0,-a) and (0,0,a) respectively.
(a) What is the electrostatic potential at the points (0,0,z) and (x,y,0) ?

Two charges -q and +q are located at points (0, 0, -a) and (0, 0, a), respectively. What is the electrostatic potential at the points (0, 0, z) and (x, y, 0) ?

Two charges -q and +q are located point (0, 0, -a) and (0, 0, a) respectively: What is the electrostatic potential at the points (0,0,z) and (x,y,0) ?

Two point charges -q and +q are located at points (0,0-a) and (0,0,a) respectively. The electric potential at point (0,0,z) is (Z gt a)

Two point charges-q and +q are located at points (0, 0,-a) and (0, 0, a) respectively. The electric potential at a point (0, 0, z), where z> a is

Two point charges -q and +q are located at points (0,0-a) and (0,0,a) resepctively.The electric potential at point (0,0,z) is (Z gt a)

Two charges -q and +q are located at points (0,0,-a) and (0,0,a) respectively. (b) Obtain the dependence of potential on the distance r of a point from the origin when r gt gt a .