The solenoid has a length of 1 m, the cross sectional area of \u200b\u200b25 cm ^ 2 and the number of turns of the solenoid 1000. The field energy at a current intensity of 1 A is 1.9 J. Determine the magnetic permeability of the core.
Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
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