Electronics Engineering

Electronics EngineeringAnalog CircuitsMultiple Choice (MCQ)1 Mark
Q2.

imageA simplified small-signal equivalent circuit of a BJT-based amplifier is given below.

The small-signal voltage gain Vo/VsV_o/V_s (in V/VV/V) is _______.

A
βRLRs+rπ\frac{-\beta R_L}{R_s + r_\pi}
B
+βRLRs\frac{+\beta R_L}{R_s}
C
βRLRs\frac{-\beta R_L}{R_s}
D
+βRLRs+rπ\frac{+\beta R_L}{R_s + r_\pi}