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In a semiconductor the concentrations of...

In a semiconductor the concentrations of electrons and holes are `8xx10^(18)//m^(3)` and `5xx10^(18)//m^(3)` 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

Ntype 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-meter.

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The correct Answer is:
A
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