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JEE Main · 2023 · 01 Feb 2023 · Shift 2 · Semiconductors

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Choose the correct statement about Zener diode:
  1. (A)It works as a voltage regulator in reverse bias and behaves like simple pn junction diode in forward bias.✓ Correct
  2. (B)It works as a voltage regulator in both forward and reverse bias.
  3. (C)It works a voltage regulator only in forward bias.
  4. (D)It works as a voltage regulator in forward bias and behaves like simple pn junction diode in reverse bias.

Answer: (A)

Solution

A Zener diode is built to operate in its reverse breakdown region, where it holds a nearly constant voltage across itself and so serves as a voltage regulator. In forward bias it conducts just like an ordinary p-n junction diode, with the usual forward drop. Therefore it works as a voltage regulator in reverse bias and behaves like a simple p-n junction diode in forward bias.

JEE Main · 2023 · 01 Feb 2023 · Shift 2 · Single correct option

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