Лаг1989 задача №17.39

A ferromagnetic core is introduced into a 500 mm long solenoid with 100 turns. The cross-sectional area of the solenoid is 8 cm². When a current of 0.25 A passes through the turns, the magnetic permeability of the ferromagnet is 8000. Determine the magnetic flux Ф through the solenoid section.

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