The conductivity of a semiconductor sample having electron...

The conductivity of a semiconductor is given by

$\sigma = e\left({n}_{e}{\mu}_{e} + {n}_{h}{\mu}_{h}\right)$

$= 1 .6 \times {10}^{- 19}\left(5 \times {10}^{18} \times 2 + 5 \times {10}^{19} \times 0 .01\right)$

$= 1.6 \times {10}^{- 19}\left({10}^{19} + 0.05 \times {10}^{19}\right)$

$= 1.6 + 1.05$

$= 1 .65 {( Ωm )}^{- 1}$