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MGIMS WARDHA MGIMS WARDHA Solved Paper-2013

  • question_answer
    In a transistor circuit, the base current changes 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)  3.5 mA                

    D)  1.8 mA

    Correct Answer: D

    Solution :

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


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