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CMC Medical CMC-Medical VELLORE Solved Paper-2014

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

    A)  100\[\mu A\]                   

    B)  500\[\mu A\]

    C)  0.01\[\mu A\]                  

    D)  0.25\[\mu A\]

    Correct Answer: B

    Solution :

                    Input current\[=\frac{{{V}_{i}}}{{{R}_{i}}}\] \[=\frac{0.01}{{{10}^{3}}}A={{10}^{5}}A\] Output collector current \[{{i}_{c}}=\beta {{i}_{p}}=50\times {{10}^{-5}}A\] \[{{i}_{c}}=500\,\mu A\]


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