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Unformatted text preview: 1 Physics 202, Lecture 13 Todays Topics Sources of the Magnetic Field (Ch 30) Overview of Sources for Electric and Magnetic Fields Magnetic Field Generated By Current The Biot-Savart Law Gausss Law In Magnetism The Amperes Law Magnetic field around straight current. Preview: Ch 30.1-3 Sources of E and B Fields: An overview Sources for the electric field: Electric charges (Coulomb's Law, static) subjects of past several weeks Change of B field (Faraday's Law, varying in time) Thursday Sources for the magnetic field: Electric current (Biot-Savart Law/Amperes Law) today Change of E field (Ampere-Maxwell Law) today All these features are summarized in Maxwell Equations. Demo: Oersteds Effect Another Right Hand Rule Quick Quiz: Magnetic Field And Current Which figure represents the B field generated by the current I . x x x x x x x x x x x x x x x x x x x x x x x x . . . . . . ....
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