In the following figure two identical conductive neutral bal…

In the following figure two identical conductive neutral balls on an insulating stand, named as X and Y,  are initially attached together. An insulator with excess positive charge is brought close to the balls. Then, the right sphere is moved away from the left one. What is the final charge if the two spheres?

Two ion molecules with unequal and opposite charges are depi…

Two ion molecules with unequal and opposite charges are depicted in the following configuration. The bigger ion has a greater magnitude than the smaller one. In which of the three regions, will you be able to find a point with the net electric field due to these two ions is zero?