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NEET Sample Paper NEET Sample Test Paper-90

  • question_answer
    The transfer ratio \[\beta \] of a transistor is 50. The input resistance of the transistor when used in the common emitter configuration is \[1\,k\Omega \] the peak value of the collector A.C. current for an A.C. input voltage of 0.01 V, is

    A) \[500\,\mu A\]   

    B)        \[0.25\,\mu A\]

    C) \[0.01\,\mu A\]  

    D)         \[100\,\mu A\]

    Correct Answer: A

    Solution :

    [a] \[\beta =\frac{{{I}_{c}}}{{{I}_{a}}}\]\[\Rightarrow \]\[{{I}_{b}}=\frac{0.01}{1\times {{10}^{3}}}={{10}^{-5}}\] or \[50=\frac{{{I}_{c}}}{{{10}^{-5}}}\]\[\Rightarrow \]\[{{I}_{c}}=50\times {{10}^{-5}}=500\times {{10}^{-6}}\] \[{{I}_{c}}=500\mu A\]


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