A

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Q. An amplifier without feedback has a voltage gain of 50, input resistance is 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is

  • (A) 1/11kΩ
  • (B) 1/5kΩ
  • (C) 5kΩ
  • (D) 11kΩ

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