Statements on Zener Diode and p-n Junction – Rankers Physics

P-N Junction Diode and its applications: Practice Problem & Solution

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.
(A) is incorrect but (B) is correct.
(A) and (B) both are correct.
(A) and (B) both are incorrect.
(A) is correct and (B) is incorrect.

Solution Explained:

To solve this problem, we apply the core principles of P-N Junction Diode and its applications. Understanding the underlying formula is key to arriving at the correct answer below:

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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