lect5 - Physics 202 Lecture Physics 202 Lecture 5 Todays...

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hysics 202, Lecture 5 Physics 202, Lecture 5 Today’s Topics ± More on Conductors in the Electric Field ± Battery ± Electric Potential (Ch. 25-Part II) ± Electric Potential For Various Charge Distributions ± Point charges ± ontinuous charges Continuous charges e.g Uniform Ring, Sphere, Shell ² Expected from preview: ³ E ÅÆ V relationship, equipotential lines, electrostatic equilibrium of conductors… q ³ Electric potential for a charge distribution…
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Conductors (Lecture 4 Review) ± Conductors: Electrons inside are able to move freely. ± Key points to understand conductors: ² If there is an electric field, free electrons inside a conductor will move Æ i.e. redistribute. he redistribution of electrons creates additional E ² The redistribution of electrons creates additional E. Field and eventually (~10 -8 s) reaches electrostatic equilibrium. + −+ −+ −+ − −+ + − + − + − + − + − + − + − + − + E=0 No Field Inside Field
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Conductors in Electrostatic Equilibrium ± Regardless of shapes : ² The electric field is zero inside the conductor ² All net charges reside on the surface of conductor. ² E field on the surface of conductor is always ormal the surface and has a magnitude normal to the surface, and has a magnitude of σ/ε 0 ² he electric field is also zero inside an empty cavity The electric field is also zero inside an empty cavity within the conductor ² potential is the same throughout the whole conductor (Equipotential)
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This note was uploaded on 02/07/2011 for the course PHYS 202 taught by Professor Everett during the Spring '08 term at University of Wisconsin.

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lect5 - Physics 202 Lecture Physics 202 Lecture 5 Todays...

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