Question

if we rub a glass rod with silk or wool , then the elctrons get transferred from glass rod to silk . why do electrons not get transferred from silk to glass rod ?

Answer 1

Dear student,
This happens because when glass is rubbed to silk cloth because when you rub there is increase in temperature in the rubbed area for silk and glass.there may be some loosely bounded electrons present in glass which become free after rubbing due to increase in thermal energy of electrons.

Glass has a electron losing tendency. Silk cloth has a electron gaining tendency. Hence flow of electrons move from glass rod to silk cloth when rubbed.mind the flow of electrons only causes static electricity which is a surface phenomenon.. If it was a conductor, there would be no static electricity as there are charge carriers.

Regards