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JEE Main & Advanced Physics Semiconducting Devices Question Bank Junction Transistor

  • question_answer
    In a transistor, a change of 8.0 mA in the emitter current produces a change of 7.8 mA in the collector current. What change in the base current is necessary to produce the same change in the collector current

    A)            50 mA                                      

    B)            100 mA

    C)            150 mA                                    

    D)            200 mA

    Correct Answer: D

    Solution :

                       \[\Delta {{i}_{e}}=\Delta {{i}_{c}}+\Delta {{i}_{b}}\]                    Þ 8 = 7.8 +\[\Delta {{i}_{b}}\]\[\Rightarrow \Delta {{i}_{b}}\]=0.2mA = 200 mA.


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