Two amplifiers are connected one after the other in series (cascaded) . The first amplifier has a voltage gain of 10 and the second has a voltage gain of 20 . If the input signal is 0.01 volt, calculate the output are signal.

Explanation

`A_(1) = 10 , A_(2) = 20 , V_(i) = 0.01 V , V_(o) = ?`
`A_(V) = A_(1) xx A_(2) = 10 xx 20 = 200`
`A_(V) = (V_(o))/(V_(i)) , V_(B) = A_(V) xx V_(i) = 200 xx 0.01 = 2 V`