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What happens during regulation action of...

What happens during regulation action of a Zener diode?

A

The current through the series resistance `(R_S)` changes

B

The resistance offered by the Zener changes

C

The Zener resistance is constant.

D

Both (a) and (b)

Text Solution

Verified by Experts

The correct Answer is:
D
During regulation action of a Zener diode, the current through the series resistance changes and resistance offered by the Zener changes. The current through the Zener changes but the voltage across the Zener remains constant.
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Knowledge Check

  • What happens during regualtion action of a Zener diode?

    A
    (a)The current and voltage across the Zener remains fixed.
    B
    (b) The current through the series resistance( R) changes.
    C
    ( c) The Zener resistnace is constant .
    D
    The resistance offered by the Zener changes.

  • In a zener diode

    A
    both p- and n-side are very lightly doped.
    B
    both p- and 11-side are heavily doped.
    C
    p-side is heavily doped but n-side is lightly doped.
    D
    p-side is ilightly doped but n-side is heavily doped.

  • Symbol of zener diode-

    A
    B
    C
    D

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    Assertion : Zener diode is used to obtain voltage regulation Reason : When Zener diode is operated in reverse bias, after a certain voltage (breakdown voltage) the current suddenly increases.

    Zener diodes are :

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    Assertion (A): Zener diode is used as a voltage regulator. Reason (R ): Zener diode operated in reverse biased condition.

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