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Unformatted text preview: 1 Physics 202, Lecture 4 Todays Topics Conductors in Electrostatic Equilibrium (Ch. 24.4) Electric Potential (Ch. 25-Part I) Electric Potential Energy & Electric Potential Electric Potential And Electric Field Expected from preview: Conductors Conservative force, electric energy, electric potential difference, voltage. Conductors And Electrostatic Equilibrium Conductors: Total charge are initially balanced (=0) but negative charge (electrons) are able to move freely inside its body. capable of redistributing charges when subject to an external electric field. Charge redistribution eventually electrostatic equilibrium . E Initial transient, <10-16 s equilibrium (right after E applied) E E=0 E E + + + + + + +- -- - - - ------- Properties of Electrostatic Equilibrium Once in electrostatic equilibrium The electric field is always zero inside the conductor E field on the surface of conductor is always normal to the surface, and has a magnitude of / (Show using Gausss law ) All net charges reside on the surface of conductor (i.e. no net charge inside the body of a conductor)....
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