-D2 in Figure will be off when the output from the driving circuit is
A) 0 V.
B) +5 V.

Name: -D2 in Figure will be off when the output from the driving circuit is A) 0 V. B) +5 V.
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Question

-D2 in Figure  will be off when the output from the driving circuit is
A) 0 V. 
B) +5 V.

Quizplus · Accepted Answer

D2 will be off when the output from the driving circuit is 0 V because in this state, there is no forward bias voltage across the diode to turn it on. Diodes require a forward bias to conduct, which is not provided at 0 V.

-D2 in Figure Will Be Off When the Output