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 semiconductor, the density of electrons is 1019 m-3 and their mobility is 1.6 m2/(V.s) then the resistivity of the semiconductor contribution of holes is ignored) is close to:
1
2 Ωm
2
4 Ωm
3
0.4 Ωm
4
0.2 Ωm