Question:-
For a class-A power amplifier, supply dc voltage is ± 12 V, the quiescent collector current is 72 mA and the load resistance is 100 ohm. If the output voltage across the load is 12 V peak-to-peak, the efficiency of the amplifier is (neglect the loss occurring in the bias resistors)
Option (A)
10.4%
Option (B)
20.8%
Option(C)
25%
Option(D)
33.3%
Correct Option:
(B)
question-answer-faq-1990