lect4 - Physics 202, Lecture 4 Todays Topics Conductors in...

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Physics 202, Lecture 4 Today’s 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….
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Conductors And Electrostatic Equilibrium Conductors: In the absence of an external field, charges are evenly distributed throughout their volume. Negative charge (electrons) are able to move freely inside its body. capable of redistributing charges when subject to an external electric field. Electrons will move around until their distribution is such that there is no force on them. Since F = qE = 0, E = 0 inside conductors. Charge redistribution eventually electrostatic equilibrium . transient, <10 -16 s Initial (right after E applied) equilibrium E=0 E E + + + + + + + - - - - - - - E - - - - - -
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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 (perpendicular) to the surface if there were any parallel components, electrons would experience force and move and has a
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lect4 - Physics 202, Lecture 4 Todays Topics Conductors in...

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