What is the voltage gain in a common emitter amplifier, where input resistance is 3 Ω and load resistance 24 Ω ? Take β = 0.6.
Answer & explanation
Correct answer: option 2
Given that,
$R_L = 24 Ω$ and $R_I = 3Ω$
∴ Resistance gain = $\frac{R_L}{R_I}-\frac{24}{3}=8$
∴ Voltage gain = current gain × resistance gain
= 0.6 × 8 = 4.8