An aluminum rod with a square cross section is 1.3 m long
Chapter , Problem 58(choose chapter or problem)
An aluminum rod with a square cross section is 1.3 m long and 5.2 mm on edge. (a) What is the resistance between its ends? (b) What must be the diameter of a cylindrical copper rod of length 1.3 m if its resistance is to be the same as that of the aluminum rod?
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