Statement-I : By doping silicon semiconductor with pentavalent ma… - Vidyadip

MCQ

Statement$-I :$ By doping silicon semiconductor with pentavalent material, the electrons density increases.

Statement$-II :$ The $n-$type semiconductor has net negative charge.

In the light of the above statements, choose the most appropriate answer from the options given below:

✓
Statement$-I$ is true but Statement$-II$ is false.
B
Statement$-I$ is false but Statement$-II$ is true.
C
Both Statement$-I$ and Statement$-II$ are true.
D
Both Statement$-I$ and Statement$-II$ are false.

✓

Answer

Correct option: A.

Statement$-I$ is true but Statement$-II$ is false.

a
Pentavalent activities have excess free ${e}^{-}$

So ${e}^{-}$density increases but overall semiconductor is neutral.

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