Задача 30750.

In the plane of the square wire frame with ohmic resistance R = 7 ohm side a = 20 cm is located at a distance h = 20 cm from the scope of the infinite straight wire. The strength of the current in a conductor varies as I = bt ^ 3, where b = 2 A / s ^ 3. Conductor parallel to one side of the frame. Determine the current in the frame at time t = 10 seconds.

Detailed solution with a single entry conditions, formulas and laws used in the decision, the derivation and answer.
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