Physics - Semiconductors Question with Solution | TestHub

Since diode${\mathit{\text{D}}}_1$is reverse biased, therefore it will act like an open circuit.
Effective resistance of the circuit is$\mathit{\text{R}}=4+2=6\Omega$.
Current in the circuit is$\mathit{\text{I}}=\mathit{\text{E}}/\mathit{\text{R}}=\text{12}/6=$2 A.