Ac signals are given to both inverting and non-inverting terminals of an op-amp. When will the output maximum

when the phase difference between the inputs is 0 or 180

when the phase difference between the inputs is 0

when the phase difference between the inputs in 90

when the phase difference between the inputs is 180

Ac signals are given to both inverting and non-inverting terminals of

1.	Ac signals are given to both inverting and non-inverting terminals of an op-amp. When will the output maximum
A.	when the phase difference between the inputs is 0
B.	when the phase difference between the inputs in 90
C.	when the phase difference between the inputs is 180
D.	when the phase difference between the inputs is 0 or 180
Answer» D. when the phase difference between the inputs is 0 or 180