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A hollow cylinder with an inner radius of 5 mm and an outer radius of 26 mm conducts a 4-A current flowing parallel to the axis of the cylinder. If the current density is uniform throughout the wire, what is the magnitude of the magnetic field at a point 12 mm from its center
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A hollow cylinder with an inner radius of 5 mm and an outer radius of 26 mm conducts a 4-A current f...
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