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

  • question_answer
    If \[{{n}_{E}}\] and \[{{n}_{H}}\] represent the number of free electrons and holes respectively in a semiconducting material, then for n-type semiconducting material

    A)  \[{{n}_{E}}<<{{n}_{H}}\]

    B)  \[{{n}_{E}}>>{{n}_{H}}\]

    C)  \[{{n}_{E}}={{n}_{H}}\]       

    D)  \[{{n}_{E}}={{n}_{H}}=0\]

    Correct Answer: B

    Solution :

    In an n-type semiconductor, majority charge carriers are electrons and minority charge carriers are holes. Therefore,  \[{{n}_{g}}>>{{n}_{H}}\]


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