A wire of resistance 5 ohm is bent in the form of a closed circle. What is the resistance between two points at the ends of any diameter of the circle???
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Answer:
1.25 ohm
Explanation:
As R is directly proportional to length
so resistance of each half would be 2.5 ohm
and as two halves are is in parallel combination so R=(5/2*5/2)/(2*5/2) =1.25ohm
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