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Calculate the conductivity of silicon crystal at 300 K. It is given that μe=1350 cm2/Vs , μn=480 cm2/Vs and at 300 K, the electron hole pair concentration is 1.072×1010 per cm3

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a

3.14×10−4 siemens/m

b

3.14×10−5 siemens/m

c

3.14×10−3 siemens/m

d

3.14 siemens/m

answer is A.

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Detailed Solution

Conductivity : σ=eneμe+nnμn [For intrinsic semiconductor : ne=nn ] =1.6 ×10-19×1.072×1010 1350 + 480 =3.14 ×10-6 siemens/cm =3.14×10−4 siemens/m

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