ENGINEER 1P03 Lecture Notes - Lecture 9: Toroid, Spherical Coordinate System, Magnetization

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ENGINEER 1P03 Full Course Notes
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ENGINEER 1P03 Full Course Notes
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Dipole moment (cid:1828) =(cid:2020)0(cid:1866) =(cid:2020)0(cid:1837) inside,(cid:1866) is number of wires per unit length. Infinite plane with (cid:2167) =(cid:1837)(cid:2206) : (cid:2158) = +(cid:2020)0. 4(cid:2024) (cid:2166) (cid:1870) (cid:1856) , indicates source point (cid:2157) =(cid:2020)0. (cid:1828)below (cid:1828)above (cid:2158)above (cid:2158)below =(cid:2020)0 (cid:2167) (cid:2196) (cid:2157)above =(cid:2157)below (cid:2034)(cid:2157)above(cid:2034)(cid:1866) (cid:2034)(cid:2157)below(cid:2034)(cid:1866) = (cid:2020)0(cid:2167) 4(cid:2024)(cid:2195) (cid:1870)2 (cid:2157)dip =(cid:2020)0 (cid:2195) = (cid:2158)dip () =(cid:2020)0(cid:2195)4(cid:2024)(cid:1870)3 2 cos + sin. Is angle from +z-axis (in spherical coordinates) (cid:2158)dip = (cid:2020)0. 4(cid:2024)(cid:1870)3 3 (cid:2195: (cid:2195) (cid:2170) =(cid:2195) (cid:2158) Assuming m lies at origin and points in z direction. Torque and force on a square current loop due to magnetic (cid:2169) magnetic dipole moment per unit volume field. A(cid:373)pe(cid:396)e"s law: (cid:2162) = (cid:2195) (cid:2158) (cid:2166)(cid:1854) = (cid:2169) (cid:2167)(cid:1854) =(cid:2169) (cid:2196) (cid:2164) =(cid:2166)(cid:1858) (cid:2164) (cid:1856)(cid:2194) =(cid:1858)enc (cid:2169) =(cid:1865)(cid:2164) (cid:2166)(cid:1854) =(cid:1865)(cid:2166)(cid:1858) (cid:2158) =(cid:2020)(cid:2164) (cid:2020) =(cid:2020)0 1 +(cid:1865) (cid:2166) =(cid:2026)(cid:2161),(cid:2026) is conductivity (cid:1848) =(cid:1844) (cid:1842) =(cid:1848) =2(cid:1844) = (cid:1856)(cid:2194) = (cid:1871)(cid:1856)(cid:2194) (cid:2161) = (cid:1871) (cid:1848) = .

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