n electrons flow through a cross section of a conductor in time t. If charge on an electron is e, write an expression for the current in the conductor.

What do you mean by quantum nature of charge ?

How is the current flowing in a conductor changed if the resistance of conductor is doubled keeping the potential difference across it the same?

Figure below shows two conductors A and B. Their charges and potentials are given in the diagram. State the direction of (i) flow of electrons, and (ii) flow of current, when both the conductors are joined by a metal wire.