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A wire of resistance 2 ohms per meter is bent to form a circle of radius 1m. The equivalent resistance between its two diametricaly opposite points is |
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Answer» When a resistance is bent in a circle, the resistors are are connected in parallel. Each of the resistors (the 2 parallel resistors of the circle) have a resistance of 2 ohms. So we get the following- Req = R1 x R2 / R1R2 (where Req is equivalent resistance in parallel connections) OR 1/Rp =1/R1 + 1/R2 ( where Rp is resistance in parallel ) 1/Rp = 1/2 + 1/2 1/Rp = 2/2 1/Rp = 1 Rp = 1 ohm. |
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