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Resonance in RLC Circuit

Since the inp...

Question

Since the input impedance of an ideal operational amplifier is infinite.

Its input current is zero

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Its output resistance is high

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Its output voltage becomes independent of load resistance

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It becomes a current controlled device

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Solution

The correct option is D Its input current is zero
Input current in an ideal operational amplifier $i = \frac{V}{Z}$
Since, input impedance of the ideal operational amplifier is infinite $i . e . Z = \infty$
$⟹ i = \frac{V}{\infty} = 0$

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