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MCQ Practice Question

Analog Electronics Operational Amplifiers

The term virtual ground in an inverting op-amp circuit means the inverting input node is approximately at ground potential while?

AIt is not physically shorted to ground
BIt carries infinite current to ground
CThe op-amp supply is disconnected
DThe feedback path is open

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Correct Answer: A. It is not physically shorted to ground

Explanation: Negative feedback holds the inverting node near the grounded non-inverting input voltage, although there is no direct physical ground connection at that node.

Reference: Standard analog electronics: virtual ground

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