BJT Small-Signal Voltage Gain (Vo/Vs) - Equivalent Circuit | GATE EC Exam

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EC > GATE 2025 > Amplifiers

A simplified small-signal equivalent circuit of a BJT-based amplifier is given below.
The small-signal voltage gain V_o/V_S (in V/V) is

A

(-βR_L)/(R_S+r_π)

B

(+βR_L)/(R_C)

C

(-βR_L)/(R_S)

D

(+βR_L)/(R_S+r_π)

Correct : a

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