Question

In Zener diode, which scenario causes a large change in current and what is its impact on Zener voltage?


Ops:


A) When applied reverse bias voltage reaches breakdown voltage and Zener voltage remains constant.


B) When breakdown voltage is greater than applied reverse bias voltage and Zener voltage increases


C) When all applied reverse bias voltage, breakdown voltage and Zener voltage remains constant.


When breakdown voltage is lesser than applied

Answer 1

In Zener diode, D. when breakdown voltage is lesser than applied reveres bias voltage causes a large change in current and Zener voltage increases.

Explanation:

• A devices usually breaks down when the current flows in reverse direction.
• Zener diode is a p-n junction diode and it is invented to work when the current flows in reverse direction.
• When the voltage reaches the potential to break the junction, then the voltage is called Zener voltage. This effect is called Zener effect.
• When the breakdown voltage is lesser then there is high current which is called as avalanche breakdown.