JEE Main & Advanced Physics Semiconducting Devices Question Bank Semiconductor Diode

  • question_answer
    If no external voltage is applied across P-N junction, there would be                                       [Orissa JEE 2002]

    A)            No electric field across the junction

    B)            An electric field pointing from N-type to P-type side across the junction

    C)            An electric field pointing from P-type to N-type side across the junction

    D)            A temporary electric field during formation of P-N junction that would subsequently disappear

    Correct Answer: B

    Solution :

               Across the \[P-N\] junction, a barrier potential is developed whose direction is from \[N\] region to \[P\] region.


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