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 of the non-inverting op-amp circuit is given as: 
\begin{equation}
\frac{V_{out}}{V_{in}}=1+\frac{R_f}{R_i}
\end{equation}

Substituting the given values in the above equation, we get:
\begin{equation}
\frac{V_{out}}{V_{in}}=1+\frac{333\mathrm{k}\Omega}{22\mathrm{k}\Omega}=16.1
\end{equation}

Therefore, the voltage gain is 16.1. The best choice is D because it is the only option with the correct answer.

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

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