Physics - Semiconductors Question with Solution | TestHub

In the circuit, diode $D_1$ is reverse biased and offers infinite resistance, diode $D_2$ is forward biased and offers $50\Omega$ resistance. The equivalent circuit is shown in the figure. Total resistance of the circuit, $R=50\Omega +50\Omega +150\Omega =250\Omega$ The current in the circuit, $I=\frac{V}{R}=\frac{10\mathrm{V}}{250\Omega }=0.04\mathrm{A}$ So, current through the resistance $150\Omega$ is $0.04\mathrm{A}$.