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A voltage amplifier has a voltage gain of 100. What will be gain at 3dB cut-off frequencies?

A voltage amplifier has a voltage gain of 100. What will be gain at 3dB cut-off frequencies? Correct Answer 70.7

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. Therefore if voltage gain is 100 then gain at 3dB frequencies will be 100 x 0.707 = 70.7.

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