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EAMCET Medical EAMCET Medical Solved Paper-2007

  • question_answer
    In a transistor circuit the base current change: from 30 \[\mu \]A to 90 \[\mu \]A. If the current gain of the transistor is 30, the change in the collector current is

    A)  4 mA                                    

    B)  2 mA

    C)   3.6 mA                               

    D)  1.8 mA

    Correct Answer: D

    Solution :

                     \[\beta =\frac{\Delta {{i}_{C}}}{90-30}\] \[\therefore \]  \[30=\frac{\Delta {{i}_{C}}}{90-30}\] \[\Delta {{i}_{C}}=30\times 60\] \[=1800\mu A=1.8mA\]


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