Question

and B are two points on a uniform ring of resistance 15 ohm the angle aob equal to 45 degree the equivalent resistance between a and b is​

Answer 1

Explanation:

For circle 180° eq R=15/2

Half circle 90° small part will be r= 15/4

Half circle 45° small part will be r1=15/8

There for

1. Total effective resistance at 45°=(3*45°r1+180°eqR 15/2) *(15/8)/(3*45°r1+180° eq R15/2)+15/8
2. Effective=1.64 ohm