P-N Junction Diode and its applications

Question 21: easy

Consider the following statements (A) and (B) and identify the correct answer.

(A) A zener diode is connected in reverse bias, when used as a voltage regulator.

(B) The potential barrier of \(p\)-\(n\) junction lies between 0.1 V to 0.3 V.

1. (A) is incorrect but (B) is correct.

2. (A) and (B) both are correct.

3. (A) and (B) both are incorrect.

4. (A) is correct and (B) is incorrect.

View Answer

A Zener diode regulates voltage when reverse-biased in the breakdown region (A is correct). The potential barrier for a Silicon p-n junction is around 0.7 V, which is outside the 0.1 V to 0.3 V range (B is incorrect).

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