Physics NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 14 PCB MCQ (Single Correct)

Which of the following properties of a Zener diode makes it suitable for use as a voltage regulator?

A
It has a very low resistance when reverse biased before breakdown.
B
The voltage across it remains nearly constant in the reverse breakdown region for a wide range of currents.
C
It allows a large current to flow when forward biased with a small voltage.
D
The Zener breakdown voltage is independent of the doping concentration.

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The correct answer is:
B

A Zener diode is specifically designed to operate in the reverse breakdown region. In this region, once the Zener voltage is reached, the voltage across the diode remains remarkably constant, even when the current flowing through it changes significantly.

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