Explain how does resistivity of a conductor depend upon
number density n of free electron
relaxation time `tau`?

Explain how the resistivity of a conductor depends upon number density 'n' of free electrons?

Explain how the resistivity of a conductor depends upon relaxation time tau ?

How does resistivity of conductor vary with temperature?

Define the term resistivity and write its S.I. unit. Derive the expression for the resistivity in terms of number density of free electrons and relaxation time.

On what factors does the resistance of a conductor depend?

How does the resistance of an ohmic conductor depend upon the applied voltage?

Show that the resistivity of a conductor is given by: rho=(mI)/(n e^2tau)