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Q.

The circuit contains two diodes each with a forward resistance of 50Ω and with infinite reverse resistance. If the battery voltage is 6 V, the current through the 120Ω  resistance is ________mA.

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answer is 20.

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Detailed Solution

D2 : Reverse biased acts as ∞  resistance⇒ current in 120Ω , I=  6120+130+50=6300A                    I=20 mA
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