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Analog ElectronicsAmplifier Fundamentals

A voltage amplifier intended to avoid loading a high-resistance signal source should ideally have?

  • AHigh input resistance
  • BVery low input resistance
  • CZero voltage gain
  • DInfinite output resistance only
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Correct Answer: A. High input resistance
Explanation: High input resistance draws little current from the source, minimizing loading and preserving the source voltage.
Reference: Standard analog electronics: amplifier input resistance
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