*Question E7G11:
What absolute voltage gain can be expected from the circuit in Figure E7-3 when R1 is 3,300 ohms and RF is 47 kilohms?*  

*Correct Answer is  B: 14*  

### AI Response: (may contain errors)  

To determine the absolute voltage gain of the circuit in Figure E7-3, we need to understand that this is a typical inverting amplifier configuration using an operational amplifier (op-amp). The voltage gain ($A_v$) for an inverting op-amp is given by the formula:

$$
A_v = -\frac{R_F}{R_1}
$$

where:
- $R_F$ is the feedback resistor,
- $R_1$ is the input resistor.

Given:
- $R_1 = 3,300 \, \text{ohms}$,
- $R_F = 47,000 \, \text{ohms}$ (47 kilohms).

Substitute these values into the formula:

$$
A_v = -\frac{47,000}{3,300} \approx -14.24
$$

The absolute voltage gain is the magnitude of $A_v$, which is approximately 14.24. Since we are looking for the closest whole number, the correct answer is 14.

### Explanation of Choices:
- **A: 28**  
  This choice is incorrect because it assumes a different ratio of $R_F$ to $R_1$. The calculated gain is approximately 14, not 28.

- **B: 14**  
  This is the correct answer. The calculated absolute voltage gain is approximately 14.24, which rounds to 14.

- **C: 7**  
  This choice is incorrect because it underestimates the gain. The ratio of $R_F$ to $R_1$ is much higher than what would result in a gain of 7.

- **D: 0.07**  
  This choice is incorrect because it suggests a very low gain, which is not possible with the given resistor values. The gain is much higher.

### Key Points:
- The formula for an inverting op-amp's voltage gain is crucial for solving this type of problem.
- Always take the absolute value of the gain when asked for "absolute voltage gain."
- Ensure resistor values are correctly converted to the same units before calculation.