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Analog ElectronicsOperational Amplifiers

An ideal non-inverting op-amp has Rf = 40 kOhm and R1 = 10 kOhm. Its voltage gain is?

  • A4
  • B5
  • C-4
  • D-5
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Correct Answer: B. 5
Explanation: Av = 1 + Rf/R1 = 1 + 40/10 = 5.
Reference: Standard analog electronics: operational amplifiers
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