Physics, 07.07.2019 02:30 rachelsweeney10

Wire 1 has a resistance r1. wire 2 is made of the same material, with length 1/2 as long and diameter 1/4. what is the resistance ratio r2/r1?

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Wire 1 has a resistance r1. wire 2 is made of the same material, with length 1/2 as long and diamete...