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What is the conductivity of a semiconductor if electron density \( =5 \times 10^{12} / \mathrm{cm}^{3} \) and hole density \( =8 \times 10^{13} / \mathrm{cm}^{3} \) \( \left(\mu_{\mathrm{e}}=2.3 \mathrm{~m}^{2} \mathrm{~V}^{-1} \mathrm{~s}^{-1}, \mu_{\mathrm{h}}=0.01 \mathrm{~m}^{2} \mathrm{~V}^{-1} \mathrm{~s}^{-1}\right) \)
(a) \( 5.634 \Omega^{-1} \mathrm{~m}^{-1} \)
(b) \( 1.968 \Omega^{-1} \mathrm{~m}^{-1} \)
(c) \( 3.421 \Omega^{-1} \mathrm{~m}^{-1} \)
(d) \( 8.964 \Omega^{-1} \mathrm{~m}^{-1} \)
\( \mathrm{P} \)
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