Question

A reverse biased zener diode when operated in the breakdown region works as:

• A. an amplifier
• B. an oscillator
• C. a voltage regulator
• D. a rectifier

Hint:

Zener diodes are extensively used in power supplies to provide stable voltage regulation.

Answer 1

The Correct Option is C

Step 1: {Understanding Zener Diode} 
A zener diode allows current to flow in the reverse direction when the applied voltage exceeds the breakdown voltage. 
Step 2: {Function of a Zener Diode} 
In the breakdown region, the voltage across the diode remains nearly constant, making it ideal for voltage regulation. Thus, the correct answer is (C).