Friday, November 13, 2009

E&M - Electric Flux - Gauss's Law - Examples

3 Types of symmetrical assumption for electric field.

1) Electric field inside a conducting sphere that is perfectly round is zero.
Proof : Using Gauss's Law, set a charge within the sphere, the electric flux coming out from the sphere is a constant, 
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2) Elecrric field outside a conducting sphere that is perfectly round is same as having a charge at the center of the sphere.
3) Electric field that is between 2 conducing plates that is infinitely large is constant, the electric field near the edges is not zero, or if the ratio of the distance between the 2 plates and the area of the plates is too small.

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