Question

Knee current in the case of zener diode implies _____________

(a) Forward bias current beyond which I-V characteristics is a straight line

(b) Reverse bias current above which I-V characteristics is a straight line

(c) Forward cut-in current beyond which current is directly proportional to voltage

(d) Maximum allowable reverse bias current through a zener diode

This question was posed to me by my college director while I was bunking the class.

This is a very interesting question from Voltage-Ampere Characteristics of Diode in division Diode Circuit of Analog Circuits

Answer 1

Correct option is (b) Reverse bias current above which I-V characteristics is a straight line

Explanation: Knee current indicates the current above which reverse characteristics is a straight line. That is the relationship between current and voltage beyond this point will be directly proportional and this is very useful for solving real life problems.