this is a theoretical question.please consider the situation as follows:
we are charging a metallic sphere using induction phenomenon with the help of a postively charged metallic rod and while on grounding the electrons flow from the ground to the sphere rather than sphere to ground, why?
while charging by induction, the part of the material being induced near to the inducing material gets opposite charge of the inducing material and the other half which is away gets opposite polarity which is same as that of the inducing material's polarity.
The Attempt at a Solution
lets say when we bring a negatively charged plastic rod to an uncharged metallic sphere, the part nearer to the inducing material gets positive charge and the other half is negatively charged.on grounding the electrons flows from the sphere to the earth and now the sphere as a whole becomes positively charged. but in the aforementioned case, why does the electron flows from ground to the sphere? what happens in the two cases? please explain.