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(C) When amplifiers are connected in series (cascade),the total voltage gain $A_v$ is the product of the individual voltage gains.Total gain $A_v = A_

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$2$

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(C) When amplifiers are connected in series (cascade),the total voltage gain $A_v$ is the product of the individual voltage gains.Total gain $A_v = A_{v1} 	imes A_{v2} = 10 	imes 20 = 200$.The relationship between output voltage $V_o$ and input voltage $V_i$ is given by $A_v = \frac{V_o}{V_i}$.Given $V_i = 0.01\, V$,we have $V_o = A_v 	imes V_i$.$V_o = 200 	imes 0.01\, V = 2\, V$.

Two amplifiers are connected one after the other in series (cascade). The first amplifier has a voltage gain of $10$ and the second has a voltage gain of $20$. If the input signal is $0.01\, V$,the output $ac$ signal will be........$V$.

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