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  3. BCECE Medical

BCECE Medical BCECE Medical Solved Papers-2014

  • question_answer
    The current gain of a transistor in a common base arrangement is 0.98. The change in collector current corresponding to a change of 5 mA in emitter current is

    A)  0.1 mA            

    B)  0.2 mA

    C)  4.9 mA            

    D)  9.2 mA

    Correct Answer: C

    Solution :

    \[\alpha =\frac{\Delta {{i}_{c}}}{\Delta {{i}_{e}}}\] Given,   \[\alpha =0.98,\,\Delta {{i}_{e}}=5\,mA\]                 \[\Delta {{i}_{c}}=(\alpha )\,(\Delta {{i}_{e}})=(0.98)(5\,mA)\] = 4.9 mA


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