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Mobility of electrons in a semiconductor...

Mobility of electrons in a semiconductor is defined as the ratio of their drift velocity to the applied electric field. If, for an n-type semiconuctor, the density of electrons is `10^(19)m^(-3)` and their mobility is `1.6m^(2)//(V.s)` then the resistivity of the semiconductor (since it is an n-type semiconductor contribution of holes is ignored) is close to :

A

`2Omegam`

B

``4Omegam`

C

`0.4Omegam`

D

`0.2Omegam`

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