The input voltage V1 of the circuit the circuit is 2V and resistor has a resistance of 1KΩ. The cut-in voltage of the silicon diode is 0.7V and the reverse saturation current is 10^-8A. The temperature at which diode operates is 30°C. The voltage across resistor when diode starts conducting is _________________(a) 0.7V(b) 1.3V(c) 0.306V(d) 1.7VThis question was addressed to me by my school principal while I was bunking the class.This interesting question is from Characteristic Equation of Diode-2 topic in chapter Diode Circuit of Analog Circuits

The input voltage V1 of the circuit the circuit is 2V and resistor has

1.	The input voltage V1 of the circuit the circuit is 2V and resistor has a resistance of 1KΩ. The cut-in voltage of the silicon diode is 0.7V and the reverse saturation current is 10^-8A. The temperature at which diode operates is 30°C. The voltage across resistor when diode starts conducting is _________________(a) 0.7V(b) 1.3V(c) 0.306V(d) 1.7VThis question was addressed to me by my school principal while I was bunking the class.This interesting question is from Characteristic Equation of Diode-2 topic in chapter Diode Circuit of Analog Circuits
Answer» Right option is (b) 1.3V To EXPLAIN: V1 = IR1 + VD For silicon DIODE, cut-in VOLTAGE is 0.7V. Hence IR1 = 2-0.7 = 1.3V Drop across the RESISTOR is 1.3V.

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