A solenoid 50 cm long and cross-sectional area of \u200b\u200b2 cm ^ 2 has an inductance 2 * 10 ^ -7 Mr. At what amperage volumetric energy density of the magnetic field inside the solenoid is equal to 10 ^ -3 J / m ^ 3?
Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
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