Question
Two charges –q and +q are located at points (0, 0, -a) and (0, 0, a), respectively.
Obtain the dependence of potential on the distance r of a point from the origin when r / a >>1.
Solution
Given,
Two charges -q and +q are located at (0,0,-a) and (0,0,a) respectively.
Electric potential at a distance OP=r from the origin is given by:
∴ the potential is inversely proportional to r2, when .
Two charges -q and +q are located at (0,0,-a) and (0,0,a) respectively.
Electric potential at a distance OP=r from the origin is given by:
∴ the potential is inversely proportional to r2, when .
