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A copper wire has a square cross section 2.66 mm on a side. The wire is...

A copper wire has a square cross section 2.66 mm on a side. The wire is 5.33 m long and carries a current of 3.53 A . The density of free electrons is 8.5×1028m−3.

If J = 4.99×105  A/m2 , E = 8.58×10−3 V/m, what is the resistance of the wire, R?

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