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

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.

Velocity of electric current is much more___ than the drift velocity of free electrons in a metallic conductor [Fill in the blanks].

Derive an expression for magnetic dipole moment of a revolving electron.

Derive an expression for the escape velocity of an object from the surface of earth. What is its value on the earth's surface ?

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.

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.

Using Rutherford model of atom , derive the expression for the total energy of the electron in hydrogen atom. What is the significance of total negative energy possessed by the electron ?

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

What happends to the drift velocity of electrons and to the resistance,if length of conductor is doubled keeping potential difference unchanged?