Question

6. Zener diode is used as a voltage regulator because for a large change in current, the voltage across it is
(A) increased
(B) decreased
(C) constant
(Dnone​

Answer 1

Answer:

The Zener diode specially made to have a reverse voltage breakdown at a specific voltage. Its characteristics are otherwise very similar to common diodes. In breakdown the voltage across the Zener diode is close to constant over a wide range of currents thus making it useful as a shunt voltage regulator.

Answer 2

Zener diode is used as a voltage regulator because, for a large change in current, the voltage across it is constant.

Option (c) is correct.

Explanation:

• Zener is a voltage regulator and it is used to maintain the voltage in a circuit.
• It is used in reverse breakdown mode to regulate the flow of current and voltage.
• Ther is a region in the Zener diode in which has the reverse bias characteristics.
• when there are changes in the value of current at a large amount then the Zener voltage remains constant to maintain the voltage.