Question: Q. 5. For the circuit shown here, find the current flowing through the 1Ω resistor. Assume that the two diodes D1 and D2 are ideal diodes.

A [SQP 2013]

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Solution:

Ans. Diode D1 is forward biased, while diode D2 is reverse biased. Hence the resistances of (ideal) diodes D1 and D2 can be taken as zero and infinity respectively. 1/2 The given circuit can therefore be redrawn as shown in the figure.

Using Ohm’s law,

I=6(2+1)A=2 A

Current flowing in the 1Ω resistor, is 2 A.



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