JEE Main & Advanced Physics Semiconducting Devices Question Bank Semiconductors

  • question_answer
    Let \[{{n}_{P}}\] and \[{{n}_{e}}\] be the number of holes and conduction electrons respectively in a semiconductor. Then [MP PET 1995]

    A)            \[{{n}_{P}}>{{n}_{e}}\]in an intrinsic semiconductor

    B)            \[{{n}_{P}}={{n}_{e}}\]in an extrinsic semiconductor

    C)            \[{{n}_{P}}={{n}_{e}}\]in an intrinsic semiconductor

    D)            \[{{n}_{e}}>{{n}_{P}}\]in an intrinsic semiconductor

    Correct Answer: C

    Solution :

               In intrinsic semiconductors, the creation or liberation of one free electron by the thermal energy has created one hole. Thus in intrinsic semiconductors ne = nh


You need to login to perform this action.
You will be redirected in 3 sec spinner