When we earth a positively charged sphere, the positive charge of the sphere vanishes. Why does this happen? When we connect two charged bodies doesn't charge redistribute till we get equipotential surface? Now when there is no charge on the sphere means the sphere has 0 potential. So that means even the earth is taken to be at 0 potential? Is it true? And if yes then why we take the earth to be at 0 potential? Is it because earth is considered to be neutral? Do positive charges from the sphere flow into the ground? Does this mean there is deficiency of positive charges in the earth? Had the sphere been negatively charged, what would have happened then? Would the electrons would have also flown into the ground? Does this mean there is deficiency of negative charges in the earth?How can earth be deficient in both negative as well as positive charges? If the earth is neutral why would it want negative or positive charges? Does this simply mean that if we connect a charged body to a neutral body body the bodies become neutral? That is, both get potential as 0?