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At 3dB cut-off frequency the voltage gain will be __________(a) 100% of maximum gain(b) 70.7% of maximum gain(c) 80.7% of maximum gain(d) 47.5% of maximum gainThe question was posed to me by my college director while I was bunking the class.This key question is from General Frequency Consideration in portion Transistor Biasing and Low Frequencies of Analog Circuits

Answer»

Right option is (B) 70.7% of MAXIMUM gain

Explanation: 3dB cut-off frequency is the frequency at which the power becomes HALF of its maximum value. That is the voltage gain becomes 0.707 times maximum voltage gain.



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