A nichrome wire of length and radius has a free-electron number density and electron…

PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity

Problem

A nichrome wire of length

2.0\,\text{m}

and radius

0.50\,\text{mm}

has a free-electron number density

n = 9.0\times10^{28}\,\text{m}^{-3}

and electron mobility

\mu = 5.0\times10^{-5}\,\text{m}^2\,\text{V}^{-1}\,\text{s}^{-1}

. Determine the resistance of the wire at

20^{\circ}\text{C}

.

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