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Question
Physics
An n-type semiconductor is
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Q. An n-type semiconductor is
VITEEE
VITEEE 2015
A
neutral
33%
B
positively charged
17%
C
negatively charged
50%
D
negatively or positively charged depending on the amount of impurity added
0%
Solution:
The $n$-type semiconductor has excess of free electrons for conduction. These electrons are unbound. Since, the total number of electrons in an atom is equal to the total number of protons in the nucleus. So, $n$-type semiconductor is neutral.