A cylinder of radius b has a cylindrical hole of radius a (a < b). The axis of the hole is parallel to the axis of the cylinder and their distance is d (Fig. 1). The electric current I flows through the cylinder. What is the magnetic field on the axis of the hole?
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A cylinder of radius b has a cylindrical hole of radius a (a < b). The...
An infinitely long cylinder with axis aloong the z-direction and
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(a+b<R). The charge density is uniform and total
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