Electrical Engineering > GATE 2018 > Operational Amplifiers
The op-amp shown in the figure is ideal. The input impedance vin/iin is given by
A
Z (R1 / R2)
B
-Z (R2 / R1)
C
Z
D
-Z(R1 / (R1 + R2))

Correct : b

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op amp ideal model input impedance op amp GATE Electrical Engineering 2018 electrical engineering gate op amp impedance ideal op amp input impedance calculation GATE 2018 Q25

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