1.

The junction diode in the following circuit requires a minimum current of 1 mA to be above the knee point (0.7 V) of its I-V characteristic curve. The voltage across the diode is independent of current above the knee point. If VB  = 5 V, then the maximum value of R so that the voltage is above the knee point, will be

A.            4.3 kW                                     
B.            860 kW
C.            4.3 W                                       
D.            860 W
Answer» B.            860 kW


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