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: {Zener Diode Principle}
A zener diode permits current flow in the reverse direction once the applied voltage surpasses its breakdown voltage. 
Step 2: {Zener Diode Application} 
Within the breakdown region, the diode's voltage remains largely stable, rendering it suitable for voltage regulation. Therefore, option (C) is correct.