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Introductory Physics Homework Help
Magnetic moment of a solid, uniformly charged ball
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[QUOTE="six7th, post: 4498620, member: 351050"] For a normal loop of wire, A would be the area inside the loop so in this case dA is the area bounded by the surface, da, of the thin segment. I have tried using the volume of the segments but the equation for magnetic moments requires an area, so I couldn't see how this would work. Edit: I have seen on similar problems that the radius of each segment is rsinθ making the area enclosed: [itex]A = πr^2\sin^2θ[/itex] This may be where I am going wrong but I am struggling to see why the radius is rsinθ [/QUOTE]
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Magnetic moment of a solid, uniformly charged ball
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