A wire of resistance 4 ohm is bent to form a circle. The resistance between two diametrically opposite points is?
Q1. A wire of resistance 4 ohm is bent to form a circle. The resistance between two diametrically opposite points is?
Answer: 1 ohm
Explanation: The wire is divided into two equal parts, each with resistance 2 ohm. These two are in parallel, so R = (2*2)/(2+2) = 1 ohm.