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If m, e, and n respectively represent the mass, charge, average relaxation time and density of the…
If m, e, $\tau$ and n respectively represent the mass, charge, average relaxation time and density of the electron, then what will be the resistance of a wire of length l and area of cross-section A?
- (a)$\frac{ml}{n e^2 \tau A}$
- (b)$\frac{m A}{n e^2 \tau^2 l}$
- (c)$\frac{n e^2 \tau A}{2 ml}$
- (d)$\frac{n e^2 \tau A}{ml}$
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From ISC 2022 Specimen Physics Paper 1, question 22.