The drift velocity of electrons in a wire is measured to be when the electric field…

PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity

Problem

The drift velocity of electrons in a wire is measured to be

2.0\times10^{-4}\,\text{m s}^{-1}

when the electric field inside the wire is

0.25\,\text{V m}^{-1}

. Calculate the mobility of electrons in the wire. (a)

8.0\times10^{-5}\,\text{m}^2\,\text{V}^{-1}\,\text{s}^{-1}

(b)

8.0\times10^{-4}\,\text{m}^2\,\text{V}^{-1}\,\text{s}^{-1}

(c)

5.0\times10^{-3}\,\text{m}^2\,\text{V}^{-1}\,\text{s}^{-1}

(d)

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