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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



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


Grade:10

1 Answers

Kevin Nash
askIITians Faculty 332 Points
10 years ago

(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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