For a voltage shunt feedback amplifier (also known as a voltage feedback amplifier), the closed-loop voltage gain (AFA_FAF) can be calculated using the following formula:
AF=−RfRinA_F = -\frac{R_f}{R_{in}}AF=−RinRf
Where:
- RfR_fRf is the feedback resistor (in this case, 10kΩ),
- RinR_{in}Rin is the resistor connected in series with the input signal source (in this case, 3.3kΩ).
Now, substitute the values into the formula:
AF=−10kΩ3.3kΩ=−3.03A_F = -\frac{10k\Omega}{3.3k\Omega} = -3.03AF=−3.3kΩ10kΩ=−3.03
The closest answer to this calculation is -3.33, which suggests a small rounding error in the options.
Thus, the correct answer is:
(d) -3.33.