Q82 / 199 · NEET 2008 (Mains) · Chemistry

The voltage gain of an amplifier with $9 \%$ negative feedback is 10 . The voltage gain without feedback will be

  • Correct answer
    A
    100
  • B
    90
  • C
    10
  • D
    1.25

Solution

Figure
Given $\frac{v_0}{v_i}=10$ and $\left(v_i-0.09 v_0\right) A=v_0$ $$ \Rightarrow \quad A=100 $$

Hence, the correct answer is option: 'A'.

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