Semiconductor Electronics Materials Devices And Simple Circuits Ques 43
43. Reverse bias applied to a junction diode [2003]
(a) increases the minority carrier current
(b) lowers the potential barrier
(c) raises the potential barrier
(d) increases the majority carrier current
Show Answer
Answer:
Correct Answer: 43.(c)
Solution:
- (c) In reverse biasing, the conduction across the $p-n$ junction does not take place due to majority carriers but takes place due to minority carriers if the voltage of external battery is large. The size of the depletion region increases thereby increasing the potential barrier.
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