ETC EngineeringMCQs
Home › Analog Electronics › In an ideal op-amp circuit operating with negative feedback in its linear region, the voltage difference V+ – V- is approximately?
MCQ Practice Question
Analog ElectronicsOperational Amplifiers

In an ideal op-amp circuit operating with negative feedback in its linear region, the voltage difference V+ – V- is approximately?

  • AZero
  • BEqual to the supply voltage
  • CInfinite
  • DAlways 1 V
Report an error
Correct Answer: A. Zero
Explanation: The very large open-loop gain with negative feedback forces the two input-node voltages to be nearly equal; this is the virtual-short approximation.
Reference: Standard analog electronics: virtual short
Continue practicing: Analog Electronics MCQs or browse all MCQs.