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Electronic Devices & CircuitsOperational Amplifiers

For an ideal non-inverting op-amp with Rf = 90 kOhm and R1 = 10 kOhm, the closed-loop voltage gain is?

  • A9
  • B10
  • C-9
  • D-10
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Correct Answer: B. 10
Explanation: For a non-inverting amplifier, Av = 1 + Rf/R1 = 1 + 90/10 = 10.
Reference: Standard analog electronics: non-inverting op-amp
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