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BCECE Engineering BCECE Engineering Solved Paper-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) 0.2mA

    C) 4.9mA                  

    D) 9.2mA                      

    Correct Answer: C

    Solution :

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


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