Question: there is a cylindrical copper wire with radius . 3 2 1 mm and length of 0 . 5 m connected to a cylindrical aluminum

there is a cylindrical copper wire with radius .321 mm and length of 0.5m connected to a cylindrical aluminum wire of radius 0.287mm and length of 0.5m. rhe resistivity of copper is 1.72x10-8

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