J & K CET Engineering J and K - CET Engineering Solved Paper-2008

  • question_answer
    The depletion layer in a silicon diode is \[1\,\mu m\] wide and its knee potential is \[0.6\text{ }V,\] then the electric field in the depletion layer will be

    A)  \[0.6\text{ }V/m\]

    B)  \[6\times {{10}^{4}}\,V/m\]

    C)  \[6\times {{10}^{5}}\,V/m\]

    D)  zero

    Correct Answer: C

    Solution :

    \[E=-\frac{dV}{dr}=\frac{0.6}{{{10}^{-6}}}=6\times {{10}^{5}}V/m\]


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