engineering physics MCQ #1875

A transistor is operated in CE configuration at Vc = 2 V such that a change in base current from 100 μA to 200 μA produces a change in collector current from 9 mA to 16.5 mA. The current gain is

engineering physics MCQ #1875

  1. Question 1

    Q1. A transistor is operated in CE configuration at Vc = 2 V such that a change in base current from 100 μA to 200 μA produces a change in collector current from 9 mA to 16.5 mA. The current gain is

    • A) 75
    • B) 85
    • C) 90
    • D) 100

    Answer: 75

    Explanation: Current gain (β) = ΔIc / ΔIb = (16.5 - 9) mA / (200 - 100) μA = 7.5 mA / 100 μA = 75.