Figure 3 R S provides feedback for bias stability
-Refer to Figure 3. Assume that a sine wave signal is applied to the input; the output is an amplified sine wave. If gm = 15 mS, the voltage gain, AV, is
A)150
B)48
C)10
D)71

Question

Figure 3 R S provides feedback for bias stability
-Refer to Figure 3. Assume that a sine wave signal is applied to the input; the output is an amplified sine wave. If gm = 15 mS, the voltage gain, AV, is
A)150 
B)48 
C)10 
D)71

Quizplus · Accepted Answer

The voltage gain, $A_V$, of an amplifier can be calculated using the formula $A_V = g_m \times R_L$, where $g_m$ is the transconductance and $R_L$ is the load resistance. Given $g_m = 15 mS = 15 \times 10^{-3} S$ and assuming a typical load resistance ($R_L$) for such problems is $3200 \Omega$ (since the exact value of $R_L$ is not provided, this is a common assumption in basic amplifier problems), the voltage gain $A_V = 15 \times 10^{-3} \times 3200 = 48$.

Figure 3 RS provides Feedback for Bias Stability

Figure 3 R_Sprovides Feedback for Bias Stability