# Lecture 7 -...

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Unformatted text preview: Conduc'ng Sphere with total charge Q  Cross sec'on of a conduc'ng sphere  All charges go to the surface of the sphere and uniformly distribute themselves  +  +  +  +  +  +  +  +  +  +  +  Cross sec'on of a conduc'ng sphere  Electric Field inside is zero  Because there are no charge inside  (Gauss’s Law)  Cross sec'on of a conduc'ng spherical shell:: Faraday cage  Einside = 0 : no charge can reside here  Conduc've Sphere  Surface of the conduc've sphere  ϕ = EA  σ  E = 0  ϕ = EA  ϕ = σA/ε0  E = σ/ε0  Ques'on #1   Can you use Gauss’s Law to solve the electric ﬁeld by charged disk?     [For calcula'ng electric ﬁeld at any arbitrary point]  A.  Yes  B.  No  Ques'on #2  Can you use Gauss’s Law to solve the electric ﬁeld by a dipole?     [For calcula'ng electric ﬁeld at any arbitrary point]  A.  Yes  B.  No  ...
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## This note was uploaded on 07/16/2011 for the course PHY 2049 taught by Professor Saha during the Fall '08 term at University of Central Florida.

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