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  3. 12th Class
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  5. Semiconducting Devices

12th Class Physics Semiconducting Devices Question Bank MCQs - Semiconductor Electronics: Materials, Devices and Simple Circuits

  • question_answer
    When a forward bias is applied to a p-n junction, it

    A) raises the potential barrier.

    B) reduces the majority carrier current to zero.

    C) lowers the potential barrier.

    D) None of the above

    Correct Answer: C

    Solution :

    Option [c] is correct.
    Explanation: When a forward bias is applied to a p-n junction, it lowers the value of potential barrier. In the case of a forward bias, the potential barrier opposes the applied voltage.
    Hence, the potential barrier across the junction gets reduced.


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