A wire of resistance 8R is bent in the form of a circle. What is the effective resistance between the ends of a diameter AB?

Explanation

To find the effective resistance between the ends of a diameter AB of a wire bent in the form of a circle with a total resistance of 8R, we can follow these steps:

### Step 1: Understand the Configuration
The wire is bent into a circle, and we need to find the resistance between two points A and B that are at the ends of a diameter.

**Hint:** Visualize the circle and the points A and B to see how the wire is divided.

### Step 2: Divide the Circle into Two Halves
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