Question

a certain inverting amplifier has an ri of 1 kω and an rf of 108 kω. the closed - loop gain is
answer:

Explanation:

Step1: Recall gain formula for inverting amp

The closed-loop gain $A_v$ of an inverting amplifier is given by $A_v = -\frac{R_f}{R_i}$

Step2: Substitute given values

$R_i = 1\ \text{kΩ}$, $R_f = 108\ \text{kΩ}$
$A_v = -\frac{108\ \text{kΩ}}{1\ \text{kΩ}} = -108$

Answer:

-108