Well ok I know that electric potential at equatorial point of a dipole is 0. It is a derived conclusion.
Q1. But how this can be explained "theoretically"?
Another question that electric potential at infinity is 0.
So if I bring a positive charge from infinity to the equatorial point of the dipole then the work done by me to bring it is 0. How could this be possible if I am true?
Q2. If I am not then what is the work done in this case?
Please help
Best Answer
If you look at the electric filed lines you will note that a positive charge moving in the direction of the blue arrow does have a force on it but that force is always at right angles to its motion. Hence no work is done moving the charge.