1.

The components in the circuit shown below are ideal. If the op-amp is in positive feedback and the input voltage Vi is a sine wave of amplitude 1 V, the output voltage V0 is

A. a non-inverted sine wave of 2 V amplitude
B. an inverted sine wave of 1 V amplitude
C. a square wave of 5 V amplitude
D. a constant of either +5 V or -5 V.
Answer» E.


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