A Wire of resistance 12 ohm is bent in the form of a circular ring. The effective resistance between the two points on any diameter of the circle is :

Options

A. `24 Omega`
B. `12 Omega`
C. `6 Omega`
D. `3 Omega`

Answer

D

Explanation

Circular ring means the resistance is in parallel.
`therefore (1)/(R ) = (1)/(6) + (1)/(6)`
`(1)/(R ) = (2)/(6)`
`rArr R = (6)/(2)k = 3 Omega`.