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Two amplifiers are connected one after t...

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 V , calculate the output AC signal .

Text Solution

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The correct Answer is:
B
Such combination is called " Cascede " combination
` underset("net")(A_(V)) = A_(V1) xx A_(V2) `
`=10 xx 20 = 200`
` :. V_0` = output voltage
` = A_V xx V_i `
` = 200 xx 0.01 `
` = 2 V `
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