J & K CET Medical J & K - CET Medical Solved Paper-2005

  • question_answer
    n-p-n transistor are preferred to p-n-f transistor because they have :

    A)  low cost

    B)  low dissipation energy

    C)  capability of handling large power

    D)  electrons having high mobility than holes

    Correct Answer: D

    Solution :

                     n-p-n transistor is formed by combining two n-type crystals between which a thin p-type crystal is there. Electrons are charge carriers within the n-p-n transistor whereas holes are charge carriers within the p-n-p transistor. Since, electrons move more easily than holes, hence n-p-n transistors are preferred compared to p-n-p.


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