Question

A wire of resistance 5 ohm is bent in the form of a closed circle. What is the resistance between 2 points at the ends of any diameter of the circle? What will be the effect on the magnetic field created by the wire?

Answer 1

Answer:

resistance of each half circle will be 2.5 ohm.

Resistance between two diametrically opposite end, the wire will be in parallel connection.

(1/R) = (1/2.5) +(1/2.5)

        =2/2.5

⇒R = 2.5/2

⇒R= 1.25 ohm