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Operational Amplifiers - Technical MCQs

Q1:

The major difference between ground and virtual ground is that virtual ground is only a:

A voltage reference

B current reference

C power reference

D difference reference

ANS:A - voltage reference

The virtual ground means in between vin+ and vin- is have more then megaohms or more or less two inputs shorted.

v2 - v1 = 0V.