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Questions  

When  the  electrical  conductivity of a semiconductor is due to the  breaking  of  its  covalent  bonds, then  the semiconductor is said to be

a
Donor
b
Acceptor
c
Intrinsic
d
Extrinsic

detailed solution

Correct option is C

Intrinsicsemiconductor →   Conductivity is due to the breaking of covalent bond Extrisnsicsemiconductor →   Conductivity is due to the breaking  of  covalent  bond  and  excess  of  charge carriers due to impurity

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In pure silicon at 300 K the electron and hole concentration is each equal to 1.5×1016m3 When doped with indium, the hole concentration increases to 4.5×1022m3 What is the electron concentration in doped silicon?


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