Define 'drift velocity' of free electrons .

Define drift velocity of free electron . If relaxation time is r then write a vector relation b etween drift velocity and electric field.

Define drift velocity of free electron . If relaxation time is r then write a vector relation b etween drift velocity and electric field.

Define drift velocity of free electron . If relaxation time is r then write a vector relation b etween drift velocity and electric field.

(i) Derive an expression for drift velocity of free electrons. (ii) How many drift velocity of electrons in a metallic conductor vary with increase in temperature ? Explain.

Derive an expression for drift velocity of free electrons in a conductor in terms of relaxation time.

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

Answer the following: (i) Derive an expression for drift velocity of free electrons. (ii) How many drift velocity of electrons in a metallic conductor vary with increase in temperature ? Explain.