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

  • question_answer
    In a common base mode of a transistor, the collector current is \[5.488\text{ }mA\] for an emitter current of \[5.60\text{ }mA\]. The value of the base current amplification factor \[(\beta )\] will be

    A)  \[49\]

    B)  \[50\]   

    C)  \[51\]

    D)  \[48\]

    Correct Answer: A

    Solution :

    [a] \[{{I}_{C}}=5.488\,mA,\,\,\,{{I}_{e}}=5.6\,mA\] \[\alpha =\frac{5.488}{5.6},\,\,\,\beta =\frac{\alpha }{1-\alpha }=49\]


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