The SI unit of electron mobility is :

M^{2} S^{- 1} V - 1

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= m^{2} s^{- 1} V^{- 1}

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m s^{- 1} V

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m^{2} s^{- 2} V

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Solution

The correct option is B $= m^{2} s^{- 1} V^{- 1}$
Electron mobility:- It is the ratio of velocity to electric field.
$μ = \frac{v_{e}}{E}$ . . . . . . .(1)
SI unit of velocity, $v_{e}$ $= m / s$
SI unit of electric field, $E$ $= V / m$
From equation (1),
SI unit of electron mobility is $= \frac{m / s}{V / m}$
$= m^{2} / V s$
$= m^{2} s^{- 1} V^{- 1}$

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