A certain noninverting amplifier has Ri of 1 kO and Rf of 100 kO. The closed-loop voltage gain is_____________? / Operational Amplifier / By admin A certain noninverting amplifier has Ri of 1 kO and Rf of 100 kO. The closed-loop voltage gain is_____________? A. 100,000 B. 1000C. 101 D. 100