Q. Suppose an unregulated d.c. input voltage $V_{I}$ is applied to a Zener diode having breakdown voltage $(V_{z})$. Then the breakdown condition for the diode to work as voltage regulator is
A) $V_{I} < V_{z}$
B) $V_{I} = V_{z}$
C) $V_{I} > V_{z}$
D) $V_{I} < \sqrt{V_{z}}$
Explanation
(c) For the breakdown condition of the Zener diode, the applied voltage $V_{I} > V_{Z}$ In that case, for a wide range of values, the current will change but the voltage remains constant
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.