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Forums
Physics
Classical Physics
Electromagnetism
What is Electrical Field in a Closed surface with no charge
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[QUOTE="Delta2, post: 5494173, member: 189563"] In your hand writing text you do the mistake in the line ##E\oint dS=0## this is not correct in your example of the sphere inside a uniform field E. The field E is not always perpendicular to the surface element and even when it is, it doesn't have the same direction with the direction of the normal of the surface element. What happens in your example is that the flux at the left half of the sphere is negative and cancels the flux at the right half which is equal but positive.(remember the positive direction for the normal to the surface element is the one that points outwards from the closed surface.) [/QUOTE]
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Forums
Physics
Classical Physics
Electromagnetism
What is Electrical Field in a Closed surface with no charge
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