Question

a wire of resistance 4R is bent in the form of a circle. what is effective resistance ​

Answer 1

Answer:

Explanation:

The straight wire has resistance 4 ohm, which is bent to form a circle and A & B are two diametrically opposite ends of the circle. The length of the wire is equal on both sides of the diameter. So, both the sides of the wire will have resistance 2 ohm each.