engineering physics MCQ #1838

A transistor is operated in common emitter configuration at V_CC = 2 V such that a change in the base current from 100 μA to 300 μA produces a change in the collector current from 10 mA to 20 mA. The current gain is

engineering physics MCQ #1838

  1. Question 1

    Q1. A transistor is operated in common emitter configuration at V_CC = 2 V such that a change in the base current from 100 μA to 300 μA produces a change in the collector current from 10 mA to 20 mA. The current gain is

    • A) 25
    • B) 50
    • C) 75
    • D) 100

    Answer: 50

    Explanation: Using the formula β = ΔI_c / ΔI_b, we get β = (20 - 10) mA / (300 - 100) μA = 50.