-Refer to the figure above. The purpose for the op- amp is to
A)supply a reference voltage.
B)limit the input voltage to the circuit.
C)amplify the error signal.
D)sense the error signal.

Question

-Refer to the figure above. The purpose for the op- amp is to
A)supply a reference voltage. 
B)limit the input voltage to the circuit. 
C)amplify the error signal. 
D)sense the error signal.

Quizplus · Accepted Answer

Op-amps are commonly used to amplify signals, in this context, it would amplify the error signal to make it more detectable or actionable by subsequent stages of the circuit.

-Refer to the Figure Above