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A PN junction diode with 100Ω resistor is forward biased such that 100A current flows. If voltage across this combination is instantaneously reversed to 10V at t=0, the reverse current that flows through diode at t=0 is?(a) 10mA(b) 100mA(c) -100mA(d) -10mAThis question was addressed to me during a job interview.I would like to ask this question from PN Diode Switching Times topic in division Semiconductor-Diode Characteristics of Electronic Devices & Circuits

Answer»

The correct answer is (B) 100mA

Easy EXPLANATION: At t=0, V=-10V. During storage TIME, current still flows.

 We KNOW that,

current I=V/R=10/100Ω=100mA from N to P region.



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