The solution of the problem 2.74 кр 2 from the problem

The solution of the problem 2.74 кр 2 from the problem

Task 2.74
A square frame with a side of 1 cm contains 100 turns and is placed in a uniform magnetic field of 100 A / m. The direction of the field is 30 ° with the normal to the frame. What kind of work is done when the frame is rotated 30 ° to one side and the other, if the current flows through it 1 A?

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