A cylindrical conductor of length 1 and uniform area of cross section A has resistance
R. Another conductor of the same material and resistance R has length 21. What will be its area of cross section?
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Answer. ◇ WKT, the length is directly proportional to the resistance and the area of cross-section is inversely proportional to the resistance. ... For the resistance to remain the same as R, the area of cross-section is also doubled as 2A. therefore, the area of cross-section is 2A.
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