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Semiconductor Electronics : Materials, Devices and Simple Circuits

  1. 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​​
    1. ​2V when diode is forward biased ​
    2. Zero when diode is forward biased
    3. V when diode is reverse biased
    4. V when diode is forward biased
Correct Option: B

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 occurs no potential drop, so potential across R is V in forward biased.



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