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JCECE Engineering JCECE Engineering Solved Paper-2011

  • question_answer
    A potential barrier of 0.50 V exists across a \[p-n\] junction. If the depletion region is \[5.0\times {{10}^{-7}}m\] wide, the strength of electric field in this region is

    A) \[1.0\times {{10}^{6}}V/m\]       

    B) \[1.0\times {{10}^{5}}V/m\]

    C)  \[2.0\times {{10}^{5}}V/m\]      

    D)  \[2.0\times {{10}^{6}}V/m\]

    Correct Answer: A

    Solution :

    \[E=\frac{V}{d}=\frac{0.50}{5.0\times {{10}^{-7}}}=1.0\times {{10}^{6}}V/m\]


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