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Electronic Devices & CircuitsOperational Amplifiers

An ideal operational amplifier used as a voltage follower has a closed-loop voltage gain of approximately?

  • A-1
  • B0
  • C+1
  • DInfinite
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Correct Answer: C. +1
Explanation: A voltage follower directly feeds the output to the inverting input and applies the signal to the non-inverting input, producing approximately unity closed-loop gain.
Reference: Standard analog electronics: voltage follower
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