ENGINEER 1P03 Lecture Notes - Lecture 19: Auxiliary Field, Magnetic Susceptibility, Electromotive Force

• School: McMaster University
• Department: Engineering (General)
• Course: ENGINEER 1P03
• Professor: Robert Fleisig

Document Summary

(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) = . Lapla(cid:272)e"s e(cid:395)uatio(cid:374) holds withi(cid:374) a ho(cid:373)oge(cid:374)eous oh(cid:373)i(cid:272) material carrying steady current (cid:1871) is the force per charge due to voltage source of circuit. For an ideal source of emf (resistanceless battery), A changing, magnetic field induces an electric field (cid:862)natu(cid:396)e a(cid:271)ho(cid:396)s a (cid:272)ha(cid:374)ge i(cid:374) flu(cid:454)(cid:863) Faraday-induced electric fields are determined by (cid:2034)(cid:2158)(cid:2034)(cid:1872) in exactly the same way as magnetostatic fields are determined by (cid:2020)0(cid:2166) Flux through a current loop due to another: Work required to start a current against back emf: Current induced by another loop: 2 = (cid:1856)2(cid:1856)(cid:1872) = (cid:1839)(cid:1856)1(cid:1856)(cid:1872)