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What is the total voltage gain of a differential amplifier with active load if input of first stage is 50V and the output of the second stage is 100V?

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What is the total voltage gain of a differential amplifier with active load if input of first stage is 50V and the output of the second stage is 100V?

(a) 20

(b) 0.2

(c) 2.5

(d) 2

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The question is from Differential Amplifier with Active Load topic in division Differential and Multistage Amplifiers of Electronic Devices & Circuits

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Right choice is (d) 2

The explanation: The total gain of a differential amplifier with active load is the ratio of the output of second stage amplifier to the input of first stage amplifier. Where, Voutput = 100V and Vinput = 50V.

AV = Voutput / Vinput = 100V / 50V = 2

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