If each diode has a forward bias resistance of 25 $Ω$ in the below circuit.

Which of the following options is correct.

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$\frac{I_{3}}{I_{4}} = 1$

$\frac{I_{1}}{I_{2}} = 2$

$\frac{I_{1}}{I_{2}} = 1$

$\frac{I_{2}}{I_{3}} = 1$

answer is D.

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Detailed Solution

$Diodes D_{1}, D_{2} conduct current while D_{2} doesn't conduct current. \begin{array}{l} I_{2} = I_{4} = \frac{I_{1}}{2} \\ ∴ \frac{I_{1}}{I_{2}} = 2 \end{array}$

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