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JEE Main & Advanced Sample Paper JEE Main Sample Paper-15

  • question_answer
    Use this graph to obtain the approximate value of current amplification factor for the transistor at \[{{V}_{CE}}=3V.\]

    A)  150                                       

    B)  500

    C)  50                                         

    D)  250

    Correct Answer: A

    Solution :

    Current amplification factor\[\beta =\frac{\Delta {{I}_{C}}}{\Delta {{I}_{B}}}\] \[=\frac{(8\cdot 5-2\cdot 5)mA}{(50-10)\mu A}=\frac{6\cdot 0\times {{10}^{-3}}}{40\times {{10}^{-6}}}=150\]


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