Задача 30094.

According to the conductor, is bent in the form of a square with sides of 10 cm, a current flows A. 20 square plane perpendicular to the magnetic field lines. And Determine the job that you want to make in order to remove the conductor out of the field. Magnetic induction B = 0.1 Tesla. Golf considered uniform.

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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