Which of the following op amp configurations has the highest input resistance?
A) summing amplifier
B) non -inverting amplifier
C) inventing amplifier
D) differential amplifier

Question

Quizplus · Accepted Answer

The non-inverting amplifier configuration has the highest input resistance because the input signal is applied directly to the non-inverting (+) input of the op-amp, which typically has a very high input impedance, often in the range of megaohms to gigaohms, minimizing the current drawn from the input source.

Which of the Following Op Amp Configurations Has the Highest