Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 12
12. In an unbiased $p-n$ junction, holes diffuse from the p-region to n-region because of
[NEET Kar. 2013]
(a) the potential difference across the p-n junction
(b) the attraction of free electrons of n-region
(c) the higher hole concentration in p-region than that in n-region
(d) the higher concentration of electrons in the $n$-region than that in the p-region
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Answer:
Correct Answer: 12. (c)
Solution:
- (c) In p-region of p-n junction
holes concentration $>$ electrons concentration and in $n$-region of $p-n$ junction.
electrons concentration $>$ holes concentration.
