Question:
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:
Correct Option: 1
Solution:
Pentavalent activities have excess free $\mathrm{e}^{-}$
So $\mathrm{e}^{-}$density increases but overall semiconductor is neutral.
Option (1)
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