Question

Fig.8.37 below shows a metal rod AB placed on an insulating stand. In Fig. (a), a negatively charged ebonite rod C is touched with the metal rod AB, while in Fig.(b), the negatively charged ebonite rod C is held near the rod AB. State the kind of charges at the ends A and B of the rod, in each case.

Answer 1

In figure (a) conduction takes place.
There is a negative charge at both ends A and B.

In figure (b) Induction takes place.
End A has the oppositely positive charge called Bound charge and end B is similarly charged i.e. negative free charge.