Задача 31470.

Frame with current 12 A, containing 50 turns of wire placed in a uniform magnetic field of 0.4 T, so that the plane perpendicular to the frame of the magnetic induction lines. Square frame of 100 cm ^ 2. What kind of work you need to do to turn the plane of the frame 60 °.

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I try to help.