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Four silicon diodes and a 10 Omega resi...

Four silicon diodes and a 10 `Omega` resistor are connected as shown in figure below .Each diode has a resistence of 1`Omega` Find the current flows through the 10 `Omega`.

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Diodes `D_2`and `D_4` are forward biased while diodes `D_1` and `D_3` are reverse biased . Only currents flowing through the closed loop is EADCBFE. Consider the applied voltage is 4V.For silicon diode, Barrier Voltage is 0.7V.
Net circuit Voltage =4-(0.7+0.7)=4-1.4
v=2.6V
Total circuit resistence =1+18+1
`R=20Omega`
`:.` Circuit Current `1=(V)/(R)=(2.6)/(20)=0.13A`
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