A large number N of closely spaced turns of fine wire is wound in a single...
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A large number N of closely spaced turns of fine wire is wound in a single layer upon the surface of a wooden sphere of adius a, with the planes of the turns perpendicular to the axis of the sphere and completely covering its surface. If the current in the winding is I, determine the magnetic field at the center of the sphere. A large number N of closely spaced turns of fine wire is wound in a single layer upon the surface of a wooden sphere of adius a, with the planes of the turns perpendicular to the axis of the sphere and completely covering its surface. If the current in the winding is I, determine the magnetic field at the center of the sphere.
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