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Name: Unknown
Status: N/A
Age: N/A
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Date: Around 1993


Question:
Two copper wires have the same mass and, necessarily, the same volume. The first wire is twice as long as the second. What is the ratio of their resistances?



Replies:
Resistance is proportional to length and inversely proportional to cross-sectional area. Another way to work the problem is to imagine two identical wires of resistance R laid (1) side by side. The total resistance is R/2 (2) end to end. The total resistance is 2R.

mooney



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