Zener diode is a specially desined p-n junction diode, in which both p-side and n-side of p-n junction are heavily doped. The zener diode is designed especially to operate in the reverse break down voltage region continuosly without being damaged? Zener diode is used to remove the fluctuations from the given voltage and thereby provides a voltage of constant magnitude (i.e., Zener diode is used as voltage regulator).
Read the above pragraph and answer the following question:
(i) What is the most important use of Zener diode?
(ii) What are the essential conditions for proper working of Zener diode?
(iii) What do you learn from the above atudy?

Options

A. Reverse bias voltage should be less than or equal to zener break down voltage
B. Reverse bias voltage applied must be greater than zener break down voltage
C. Zener is to be reverse biased for zener action
D. For given diode there can be different zener break down voltages.

Answer

B