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### In semiconductor the concentrations of electrons and holes are 8×10$$^{18}$$/m3 and 5×10$$^{18}$$/m respectively. If the( mobilities of electrons and hole are 2.3m$$^{2}$$/volt-sec and 0.01m$$^{2}$$/volt-sec respectively, then semiconductor is

A) N-type and its resistivity is 0.34 ohm-metre

B) P-type and its resistivity is 0.034 ohm-metre

C) N-type and its resistivity is 0.034 ohm-metre

D) P-type and its resistivity is 3.40 ohm-metre

A

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