Задача 31454.

Direct conductive rod weight of 100 g and 1 m long, freely suspended by one of its ends, transferred to a uniform magnetic field of 0.1 T, so that the magnetic induction lines are perpendicular to the rod. When passing through the core of the current strength I (lead wires are out of the magnetic field) of the deviated at an angle of 30 °. Determine current.

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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