Physics, 28.02.2020 00:48 celsa86johana

Two insulated copper wires of similar overall diameter have very different interiors. One wire possesses a solid core of copper, with a circular cross section of radius 2.28 mm. The other wire is composed of 19 strands of thin copper wire bundled together. Each strand has a circular cross section of radius 0.456 mm. The current density J in each wire is the same. J = 3750 A /m^2

a. How much current does each wire carry?
b. What is the resistance of a 6.25 m length of each wire?

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Two insulated copper wires of similar overall diameter have very different interiors. One wire posse...