engineering physics MCQ #1853

The voltage gain of an amplifier with negative feedback is

engineering physics MCQ #1853

  1. Question 1

    Q1. The voltage gain of an amplifier with negative feedback is

    • A) inversely proportional to feedback fraction
    • B) directly proportional to feedback fraction
    • C) independent of feedback fraction
    • D) proportional to square of feedback fraction

    Answer: inversely proportional to feedback fraction

    Explanation: Voltage gain with feedback = A / (1 + βA), for large A, gain is inversely proportional to β.