lecture20 - Lecture 20 Lecture 20 Physics 2102 Jonathan...

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Unformatted text preview: Lecture 20 Lecture 20 Physics 2102 Jonathan Dowling Ch. 31: Electrical Oscillations, LC Ch. 31: Electrical Oscillations, LC Circuits, Alternating Current Circuits, Alternating Current What are we going to learn? What are we going to learn? A road map A road map Electric charge Electric force on other electric charges Electric field , and electric potential Moving electric charges : current Electronic circuit components: batteries, resistors, capacitors Electric currents Magnetic field Magnetic force on moving charges Time-varying magnetic field Electric Field More circuit components: inductors. Electromagnetic waves light waves Geometrical Optics (light rays). Physical optics (light waves) Oscillators are very useful in practical applications, for instance, to keep time, or to focus energy in a system. All oscillators operate along the same principle: they are systems that can store energy in more than one way and exchange it back and forth between the different storage possibilities. For instance, in pendulums (and swings) one exchanges energy between kinetic and potential form. Oscillators in Physics Oscillators in Physics In this course we have studied that coils and capacitors are devices that can store electromagnetic energy electromagnetic energy . In one case it is stored in a magnetic field, in the other in an electric field. pot...
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This note was uploaded on 11/18/2011 for the course PHYSICS 2102 taught by Professor Dowling during the Fall '10 term at LSU.

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lecture20 - Lecture 20 Lecture 20 Physics 2102 Jonathan...

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