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MCQ Practice Question

Electronic Devices & Circuits Operational Amplifiers

An ideal op-amp has input resistance and output resistance respectively equal to?

AZero and infinite
BInfinite and zero
CUnity and unity
DZero and zero

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Correct Answer: B. Infinite and zero

Explanation: The ideal op-amp draws no input current, implying infinite input resistance, and acts as an ideal voltage source at its output, implying zero output resistance.

Reference: Standard analog electronics: ideal op-amp properties

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