A wire of resistance 24 ohms is bent in the form of a
circular ring. The effective resistance between the two
points on any diameter of the circle is
(1) 24 ohms
(2) 12 ohms
(3) 6 ohms
(4) 3 ohms
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Answer Posted / shahbaz khan
For resistance between two point of diameter (180degree) of circle
=180/360*24
=12 ohm
We got R1= 12 ohm
R2=R-R1
=24-12=12. [Given R=24]
Therefore effective resistance;
1/R=1/R1+ 1/R2
= 1/12 + 1/12
=1/6
R=6 ohm
Since Effective resistance is 6 ohm
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