Задача 30742.

In a copper conductor with a cross-sectional area of 4 mm^2 and a length of 6 m, an amount of heat of 18 J is released every minute. Calculate the electric field strength, density and strength of the electric current in the conductor.

Detailed solution with a brief record of the conditions, formulas and laws used in the solution, derivation of the calculation formula and answer.
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