Question

In the case of p-n junction diode at a high value of reverse bias, the current rises sharply. The value of reverse bias is known as

• A. cut off voltage
• B. Zener voltage
• C. inverse voltage
• D. critical voltage

Answer 1

The correct option is B Zener voltage


The large negative reverse bias voltage ($V_Z$) applied to a p-n junction diode in a reverse bias condition, at which the current increases sharply is called the Zener Voltage or Breakdown Voltage.
The current increases tremendously because the number of charge carriers increases so much that zener breakdown occurs at such high negative voltages.