Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 15

15. In forward biasing of the $p-n$ junction [2011]

(a) the positive terminal of the battery is connected to $p$-side and the depletion region becomes thick

(b) the positive terminal of the battery is connected to $n$-side and the depletion region becomes thin

(c) the positive terminal of the battery is connected to $n$-side and the depletion region becomes thick

(d) the positive terminal of the battery is connected to $p$-side and the depletion region becomes thin

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Answer:

Correct Answer: 15. (d)

Solution:

  1. (d) In forward biasing of the p-n junction, the positive terminal of the battery is connected to $p$-side and the negative terminal of the battery is connected to $n$-side. The depletion region becomes thin.

An ideal junction diode when forward biased offers zero resistance. Voltage drop across such a junction diode is zero. In reverse bias diode offers infinite resistance and voltage drop across it is equal to voltage applied.



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