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GATE ECE 2005 | Question: 15

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The input resistance $\text{R}_{\mathrm{i}}$ of the amplifier shown in the figure is

  1. $\frac{30}{4} \; \mathrm{k} \Omega$
  2. $10 \; \mathrm{k} \Omega$
  3. $40 \; \mathrm{k} \Omega$
  4. infiinte

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