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AMU Medical AMU Solved Paper-2002

  • question_answer
    In a common base circuit, the collector current changes by 0.04 mA when the collector-base voltage is changed by 0.5 V. Output resistance (in \[k\Omega \]) is

    A)  6                                            

    B)  20

    C)  16                                         

    D)  12.5

    Correct Answer: D

    Solution :

                     The output resistance is given by                 \[R=\frac{{{V}_{c}}}{{{I}_{c}}}\] Given,   \[{{V}_{c}}=0.5\,V,\,{{I}_{c}}=0.04\,mA\]                 \[=0.04\times {{10}^{-3}}A\] \[\therefore \]  \[R=\frac{0.5}{0.04\times {{10}^{-3}}}\]                 \[=12500\,\,\Omega =12.5\,\,k\Omega \]


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