What is the actual answer of my question(at the top)? It may be in higher class,but i wanna know
Dear Student ,
In an electrostatic field, the work done only depends on the final points, and not the path taken. So when in a closed loop the charge returns back to it's original position, the work done is zero. This is because the net potential drop in the path of the charge is zero. Since net potential drop is zero, the net work done on the charge will also be zero because the net potential drop is equal to the net work done divided by the magnitude of the charge in coulombs.
Regards
In an electrostatic field, the work done only depends on the final points, and not the path taken. So when in a closed loop the charge returns back to it's original position, the work done is zero. This is because the net potential drop in the path of the charge is zero. Since net potential drop is zero, the net work done on the charge will also be zero because the net potential drop is equal to the net work done divided by the magnitude of the charge in coulombs.
Regards