Ideal Op-amp
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1
Because of its very high open-loop gain, an op-amp with negative feedback maintains its two inputs at:
A.Very different voltages
B.Approximately the same voltage (virtual short)
C.The supply voltage
D.Ground always
2
An ideal operational amplifier has an input impedance of:
A.Zero
B.Infinite
C.One ohm
D.Negative
3
An ideal operational amplifier has:
A.Zero input impedance
B.Infinite input impedance and infinite open-loop gain
C.Finite, low gain
D.A fixed output of 0 V
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