Consider circuit in Figure. How much energy is absorbed by electrons from the initial state of no current (ignore thermal motion) to the state of drift velocity?

How much is the drift velocity of electrons?

Energy of an electron in the nth orbit hydrogen atom is given by E_n = - (13.6)/(n^2) eV How much energy is required to take an electron from the ground state to the first excited state?

Since drift velociy of electrons is very small, how then is current established almost the instant a circuit is closed?

What is drift velocity of electrons? How do you explain the flow of current in a conductor based on this?

The energy required to remove an electron from a gaseous atom from its ground state is called

State Ohm's law and derive it from the basic ideas of drift velocity of electrons.

State Ohm’s law and derive it from the basic idea of drift velocity of electrons.

An electron in a hydrogen atom in its ground state absorbs 1.5 times as much energy as the minimum required for it to escape from the atom. What is the velocity of the emitted electron?