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anban
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Homework Statement
How do I find the electric field at a point above the center of a charged sphere? Assume the sphere is a shell.
Homework Equations
The Attempt at a Solution
\I know there will only be a z component to the electric field, because x and y components will cancel by symmetry. I think the process will have to involve integrating over the surface of the sphere. Where do I start?
More things I know (or think I know):
dq = σdA
The dA terms will point radially from the sphere.
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