Equal amplitude ac signals are given as inputs to both inverting and given as inputs to both inverting and non-inverting terminals of an op-amp. The output will be zero when the phase difference between inputs is

Equal amplitude ac signals are given as inputs to both inverting and g

1.	Equal amplitude ac signals are given as inputs to both inverting and given as inputs to both inverting and non-inverting terminals of an op-amp. The output will be zero when the phase difference between inputs is
A.	0°
B.	90°
C.	180°
D.	270°
Answer» B. 90°