Deduce Ohm's law using the concept of drift velocity.

What is drift velocity?

Ohm's law (E=IR)

Explain the term drift velocity of electrons. Hence obtain the expression for the current through the conductor in terms of the drift velocity.

Ohm's law is not obeyed by:

What is meant by drift velocity of free electrons? Derive Ohm's law on the basis of theory of electron drift.