Задача 31504.

Long straight coil wound from a wire diameter d = 1 mm, so that the coils in close contact with each other. Current flows through the solenoid force I = 10 A. Find induction B of the magnetic field on the axis of the solenoid at the same distance from its ends.

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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