A certain noninverting amplifier has Ri of 1 kΩ and Rf of 100 kΩ. The closed-loop voltage gain is

Solution (By Examveda Team)

To find the closed-loop voltage gain of a noninverting amplifier, use the formula:

Closed-loop voltage gain $$A_{v}$$ = $$1 + \frac{R_f}{R_i}$$

Given:
- $$R_i$$ (input resistance) = 1 kΩ
- $$R_f$$ (feedback resistance) = 100 kΩ

Substitute these values into the formula:

$$A_{v} = 1 + \frac{100000}{1000}$$
$$A_{v} = 1 + 100$$
$$A_{v} = 101$$

Therefore, the closed-loop voltage gain is 101.