J & K CET Medical J & K - CET Medical Solved Paper-2008

  • question_answer
    If nE and nH represent the number of free electrons and holes respectively in a semiconducting material, then for n-type semiconducting material

    A)  \[{{n}_{g}}<<{{n}_{H}}\]                             

    B) \[{{n}_{g}}>>{{n}_{H}}\]

    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,   \[{{n}_{E}}>>{{n}_{H}}\]


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