1.

The switch is at position shown in the figure initially and steady state is from t=0 to t=to. The switch suddenly is thrown to the other position. The current flowing through the 10K resistor from t=0 is?(a) 1mA(b) 2mA(c) -2mA(d) -1mAI have been asked this question by my school teacher while I was bunking the class.The doubt is from PN Diode Switching Times in division Semiconductor-Diode Characteristics of Electronic Devices & Circuits

Answer»

The correct option is (C) -2mA

The best explanation: INITIALLY, the diode is in forward bias. When suddenly SWITCHED to reverse bias, upto a storage TIME limit, it CONDUCTS during storage time period.

We know that, current I=V/R=-20/10K=-2mA.



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