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GATE ECE 2001 | Question: 1.9

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The ideal $\text{OP-AMP}$ has the following characteristics.

  1. $\mathrm{R}_{\mathrm{i}}=\infty, \mathrm{A}=\infty, \mathrm{R}_{0}=0$
  2. $\mathrm{R}_{\mathrm{i}}=0, \mathrm{~A}=\infty, \mathrm{R}_{0}=0$
  3. $\mathrm{R}_{\mathrm{i}}=\infty, \mathrm{A}=\infty, \mathrm{R}_{0}=\infty$
  4. $\mathrm{R}_{1}=0, \mathrm{~A}=\infty, \mathrm{R}_{0}=\infty$

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