Figure $18

Question

Figure $18 < 1$
-If $\mathrm { R } _ { f } = 333 \mathrm { k } \Omega$ and $\mathrm { R } _ { \mathrm { i } } = 22 \mathrm { k } \Omega$ in Figure 18-1(b), the voltage gain equals________
A) 15.1 
B) 16 
C) 15 
D) 16.1

Quizplus · Accepted Answer

The voltage gain in an amplifier circuit, particularly in configurations like the one described, is given by the formula $A_v = 1 + \frac{R_f}{R_i}$, where $R_f$ is the feedback resistance and $R_i$ is the input resistance. Substituting the given values, $A_v = 1 + \frac{333k\Omega}{22k\Omega} = 1 + 15.13636$, which rounds to 16.1.

Figure 18<118 < 118<1 -If Rf=333kΩ\mathrm { R } _ { f } = 333 \mathrm { k } \OmegaRf​=333kΩ

Figure $18 < 1$ -If $\mathrm { R } _ { f } = 333 \mathrm { k } \Omega$