CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2007

  • question_answer
    When the forward bias voltage of a diode is changed from 0.6 V to 0.7 V, the current changes from 5 mA to 15 mA. Then its forward bias resistance is

    A)  \[0.01\,\Omega \]                         

    B)  \[0.1\,\,\Omega \]        

    C)         \[10\,\,\Omega \]          

    D)         \[100\,\,\Omega \]

    E)  \[0.2\,\,\Omega \]

    Correct Answer: C

    Solution :

    Forward bias resistance\[=\frac{\Delta V}{\Delta I}\] \[=\frac{0.7-0.6}{(15-5)\times {{10}^{-3}}}=\frac{0.1}{10\times {{10}^{-3}}}=10\,\Omega \]


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