Home » Decibels, Amplification and Attenuation » 2 » d The input to an amplifier is 1 volt rms and output 100 volt rms. This is an increase of:   a.   10 dB   b.   20 dB   c.   40 dB   d.   100 dB Your answer "d" is not correct. "c" is the right answer. Next