The relaxation time in conductors

Define 'relaxation time' in a conductor. Explain how it varies with increase in temperature of a conductor. State the relation between resistivity and relaxation time.

What is relaxation time In a conductor?

Define the terms (i) drift velocity, (ii) relaxation time. A conductor of length L is connected to a d.c. source of emf epsi. If this conductor is replaced by another conductor of same material and same area of cross-section but of length 3L, how will the drift velocity change ?

Define relaxation time of conduction electrons. How it depends on the temperature of the conductor?

(a) Using Ampere.s circuital law or Biot Savart.s law, show that magnetic flux density .B. at a point P at a perpendicular distance.d from a long current carrying conductor is given by: B=(mu_0/(4pi)) (2I)/a (Statement of the law is not required) (b) Define the terms (i) drift velocity, (ii) relaxation time. A conductor of length L is connected to a d.c. source of emf E. If this conductor is replaced by another conductor of same material and same area of cross-section but of length 3L, how will the drift velocity change?

define relaxation time.

If the temperature of a good conductor increases, how does the relaxation time of electrons in the conductor change?

If temperature of a good conductor increses, how does the relaxation time of electrons in the conductor change?