1.

After cut-in voltage AC resistance of diode ____________(a) Slightly decreases(b) Decreases exponentially(c) Slightly increases(d) Increases exponentiallyThe question was asked in a job interview.This key question is from Resistance Level topic in portion Diode Circuit of Analog Circuits

Answer»

Correct ANSWER is (b) DECREASES exponentially

The BEST I can explain: After cut-in voltage CURRENT exponentially increases with SMALL increase in voltage. This will considerably reduce resistance.



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