How is the conductivity σ of a metal related to relaxation time τ? - CURRENT ELECTRICITY Quiz | GKFix.in

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Question

How is the conductivity σ of a metal related to relaxation time τ?

A. σ = m/ne²τ
B. σ = ne²τ/m
C. σ = nτ/em
D. σ = eτ/nm