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

1. A. 4 A
2. B. 4.5 A
3. C. 8 A
4. D. 2 A

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