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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 / nihal
As a diameter divides a circle exactly half a way, so the wire too is divided halvely. Thus the length of each 2 segments is half of original. Thus resistance of each is halved. As the 2 segments is between the same 2 points, the combination is parallel. Then,
R=(12*12)/(12+12)=6 ohms
| Is This Answer Correct ? | 22 Yes | 4 No |
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