Kirchhoff's Laws and Circuit Analysis

2025 1 question

1. A constant voltage of $50\text{ V}$ is maintained between the points A and B of the circuit shown in the figure (bridge network with resistors $1\,\Omega$, $2\,\Omega$, $3\,\Omega$, $4\,\Omega$ and central vertical branch CD). The current through the branch CD of the circuit is: