Задача 31059.

A long straight wire and a rectangular circuit arranged as shown in the figure. The contour moves from a position in which b = 5 cm, to a position in which b = 10 cm. This work is done 23 nJ. Current I1 = 2 A, c = 5 cm and 10 cm. Determine I2.

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
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