Question

In this $I-V$ characteristic curve of a zener diode, regions 1 and 2 respectively indicate

• A. forward bias and reverse bias regions.
• B. reverse bias and forward bias regions.
• C. forward bias regions only.
• D. reverse bias regions only.

Answer 1

The correct option is A forward bias and reverse bias regions.

When the zener diode is connected in forward bias it acts as a normal diode.And when the reverse bias voltage is greater than a predetermined voltage then the zener breakdown voltage occur that is denoed by $V_z$.

And at a certain value of reverse voltage the reverse current will increase suddenly and sharply so, it clear that in this $I-V$ characteristic curve of a zener diode, region $1$ is forward bias and region $2$ is reverse bias region.