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Home › Electronic Devices & Circuits › An ideal op-amp difference amplifier with matched resistor ratios R2/R1 = R4/R3 = 10 receives V2 = 0.3 V at the non-inverting network and V1 = 0.1 V at the inverting network. Its output is?
MCQ Practice Question
Electronic Devices & CircuitsOperational Amplifiers

An ideal op-amp difference amplifier with matched resistor ratios R2/R1 = R4/R3 = 10 receives V2 = 0.3 V at the non-inverting network and V1 = 0.1 V at the inverting network. Its output is?

  • A+0.2 V
  • B+2 V
  • C-2 V
  • D+4 V
Report an error
Correct Answer: B. +2 V
Explanation: For matched ratios, Vo = (R2/R1)(V2 - V1) = 10(0.3 - 0.1) = 2 V.
Reference: Standard analog electronics: difference amplifier
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