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.
The correct option is D (A) is correct and (B) is incorrect. ∙ In reverse biased, after breakdown, voltage across the zener diode becomes constant. Therefore, zener diode is connected in reverse biased when used as voltage regulator. ∙ Potential barrier of silicon diode is nearly 0.7 V. Thus, statement (A) is correct and statement (B) is incorrect.
