Find the relaxation time of conduction electrons in a metal of resistivity 1.54 × 10^−8 Ω. 𝑚, if the

Find the relaxation time of conduction electrons in a metal of resistivity 1.54 × 10^−8 Ω. 𝑚, if the metal has 5.8 × 10^28 conduction electrons/m^3.