If each diode in figure has a forward bias resistance of $25\mathrm{\Omega }$ and infinite resistance in reverse bias, what will be the value of the current $I_1$

Given, forward biased resistance $=25\mathrm{\Omega }$

Reverse biased resistance $=\mathrm{\infty }$

As the diode in branch CD is in reverse biased which having resistance infinite

$R_{\text{eff }}=\left(25+\frac{150}{2}\right)\mathrm{\Omega }$

$=100\mathrm{\Omega }$

$I_{\mathrm{Net}}=\frac{5}{100}=0.05\mathrm{A}$