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A semiconductor has the electron concent...

A semiconductor has the electron concentration `0.45 xx 10^(12) m^(-3)` and hole concentration `5 xx 10^(29) m^(-3)` . Find its conductivity . Given electron mobility = `0.135 m^(2) V^(-1) s^(-1)` and hole mobility = `0.048 m^(2) V^(-1) s^(-1) , e = 1.6 xx 10^(-19) C`

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`3.845 Omega^(-1) m^(-1)`
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