When the Zener diode is used as a voltage regulator, it is connected in (a) forward bias and in parallel with load. (b) reverse bias and in series with load. (c) forward bias and in series with load. (d) reverse bias and in parallel with load.

Answer: (d). A Zener regulates only in the reverse breakdown region, so it is reverse biased. The load must get the same constant voltage VZ, so the Zener is placed in parallel with the load (a series resistor drops the extra voltage). So the answer is (d) reverse bias and in parallel with load.

When the Zener diode is used as a voltage regulator, it is connected… | MHT CET 2026 (17 Apr, Shift 1)

Q2MHT CET 2026 · 17 APR · SHIFT 1Easy

Special Purpose Diodes

When the Zener diode is used as a voltage regulator, it is connected in

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Answer: (d)

A Zener regulates only in the reverse breakdown region, so it is reverse biased.
The load must get the same constant voltage $V_Z$ , so the Zener is placed in parallel with the load (a series resistor drops the extra voltage).
So the answer is (d) reverse bias and in parallel with load.

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