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Railways General Science & Technology Semiconductor Electronics Sample Paper Semiconductor Electronics Sample Test Paper-12

  • question_answer
    In a semiconductor, the concentration of electrons is \[8\times {{10}^{14}}/c{{m}^{3}}\] and that of the holes is \[5\times {{10}^{12}}c{{m}^{3}}.\] The semiconductor is

    A)  p-type 

    B)  n-type

    C)  Intrinsic

    D)  pnp type

    Correct Answer: B

    Solution :

    [b] Since \[{{n}_{e}}>{{n}_{h}},\]the semiconductor is N-type


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