JEE Main & Advanced Physics Semiconducting Devices Question Bank Self Evaluation Test - Semiconductor Electronics: Materials, Devices and Simple Circuits

  • question_answer
    Current gain of a transistor in common base mode is\[0.95\]. Its value in common emitter mode is

    A)  \[0.95\]

    B)  \[1.5\]

    C)     \[19\]

    D)  \[{{(19)}^{-1}}\]

    Correct Answer: C

    Solution :

    [c] \[\beta =\frac{\alpha }{1-\alpha }=\frac{0.95}{1-0.95}=\frac{0.95}{0.05}=19\]


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