Banking Physics Semiconducting Devices Question Bank Semiconductor Electronics

  • question_answer
    In a p-n junction

    A)  the potential of p & n sides becomes higher alternately

    B)  the p side is at higher electrical potential than n side  

    C)  the n side is at higher electric potential than p side

    D)  both p & n sides are at same potential

    Correct Answer: B

    Solution :

    Hint: For easy flow of current the side must be connected to + ive terminal of battery i.e., it is connected to higher potential in comparison to n. This connection is called forward biased. In this case the input resistance is very low. In reverse-biased, the p-side is connected to -ive terminal & n-side to (+ive) terminal to battery. In this case input resistance is very high.


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