Question

derive the expression for resistivity..​

Answer 1

explanation :-

Derive an expression for the resistivity of a good conductor, in terms of the relaxation time of electrons. is the relaxation time. Two wires of equal length, one of aluminium and the other of copper have the same resistance. ... (ρAl = 2.63 x 10-8 Ω m, ρCu = 1.72 x 10–8 Ω m, Relative density of Al = 2.7, of Cu = 8.9).