Choose the correct statements: (I) A Zener diode is connected in reverse bias when used as a voltage regulator. (II) The potential barrier of a p–n junction lies between 0.1 V and 0.3 V.
Options

Question

Choose the correct statements: (I) A Zener diode is connected in reverse bias when used as a voltage regulator. (II) The potential barrier of a p–n junction lies between 0.1 V and 0.3 V.

G1 Physics · Accepted Answer

Statement I is true: a Zener operates in reverse-breakdown region for voltage regulation. Statement II is false as a universal claim; a Si p–n junction has a typical room-temperature forward junction voltage near 0.7 V (Ge near 0.3 V). Final answer: Option C (I true, II false).