A uniform metallic wire having resistance 4 Ω is bent to form a square loop (ABCD) (see figure). A resistance of 2 Ω is connected between points B…

A uniform metallic wire having resistance $\displaystyle 4 \Omega$ is bent to form a square loop (ABCD) (see figure). A resistance of $\displaystyle 2 \Omega$ is connected between points B and D and a battery of $\displaystyle 2$ V is connected across points A and C as shown in the figure. Now the value of current (I) is :