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

Derive an expression for drift velocity of electrons in a conductor. Hence deduce Ohm's law.

Obtain an expression for the force acting on a conductor placed in a magnetic field.

Using the concept of free electrons in a conductor, derive the expression for the conductivity of a wire in terms of number density and relaxation time. Hence obtain the relation between current density and the applied electric field E.

The number of free electrons per unit volume in a metallic conductor is 10^22 cm^-3 .The area of cross section of the conductor is 1mm^2 and the strength of current through the conductor is 1A. Determine the drift velocity of the free electrons,(Given that the charge of an electron -1.6 times 10^-19 C )

Obtain for the expression from drift velocity the vector form of ohm’s Law.

Define relaxation time of the free electrons drifting in a conductor.How is it related to the drift velocity of free electrons? Use this relation to deduce the expression for the electrical resistivity of the material.

If 720 C charge flows through a conductor in 2 minutes, the current-strength through the conductor will be

Establish the relation between drift velocity of electron and current density in metallic conductor.

Establish the relation between drift velocity of electron and current density in metallic conductor.