Physics · Operational Amplifiers

The op-amp shown in the figure is ideal. The input impedance Vin / iin is given by:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1-Z (R2 / (R1 + R2))
2Z
3-Z (R2 / R1)✓
4Z (R1 / R2)

Correct answer

-Z (R2 / R1)

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