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Railways General Science & Technology Semiconductor Electronics Sample Paper Semiconductor Electronics Sample Test Paper-12

  • question_answer
    A d. c. battery of V volt is connected to a series combination of a resistor R and an ideal diode D as shown in the figure below. The potential difference across R will be

    A)  2V when diode is forward biased

    B)  Zero when diode is forward biased

    C)  V when diode is reverse biased

    D)  V when diode is forward biased

    Correct Answer: D

    Solution :

    [d] In forward biasing, the diode conducts. For ideal junction diode, the forward resistance is zero; therefore, entire applied voltage occurs across external resistance R i.e., there occur no, potential drop, but potential across R is V in forward biased.


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