A 4ohm resistance wire is bent in the form of a circle. Find the effective resistance between the ends of diameter
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Answer:
Resistance = 4 ohms.
Explanation:
When a wire of resistance 4R is bent in the form of circle, then the resistance of each segment across the diameter becomes 2R as shown in the figure.
Equivalent resistance between A and B:
1/ R AB = 1/2R + 1/2R = 2/2R
1/RAB = 1/ R
RAB = R
Thus, the effective resistance is 4 ohms only.
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