If the average time between collisions is τ, what is the expression for drift velocity vd? - CURRENT ELECTRICITY Quiz | GKFix.in

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Question

If the average time between collisions is τ, what is the expression for drift velocity vd?

A. vd = eE/m
B. vd = eEτ/m
C. vd = mτ/(eE)
D. vd = eEm/τ

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