Asked by | 15th Apr, 2008, 10:17: PM
since gauss law work greatly for symmetrical surfaces. generally we have mainly three symmtries
1- for solid sphere or spherical shell we take concentric sphere as a gaussian surface.
2- for infinite line charge we take a coaxial cylinder as a gaussian surface.
3- for infinite plane sheet, we take gaussian pill box as a gaussian surface.
As such a gaussian surface can have any shape, as long as it encloses the charge. The only reason for choosing a symmetric surface is to make integration, required for finding flux, easier.
Answered by | 16th Apr, 2008, 04:42: PM
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