Operational Amplifiers - Technical MCQs

Q1:

With negative feedback, the returning signal:

A aids the input signal

B is proportional to output current

C opposes the input signal

D is proportional to differential voltage gain

ANS:C - opposes the input signal

A negative feedback amplifier (or feedback amplifier) is an electronic amplifier that subtracts a fraction of its output from its input, so that negative feedback opposes the original signal.