Q 12-14-011NEETNEET 2021Top questionEasy
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.
Answer: (D) (A) is correct and (B) is incorrect.
(A) A Zener diode regulates voltage in reverse breakdown, so it is connected in reverse bias. Correct.
(B) The barrier potential is about $0.7$ V for silicon and about $0.3$ V for germanium. It does not in general lie between $0.1$ V and $0.3$ V. Incorrect.
Solution by Sreeraj P, M.Sc Physics