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fayled
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Homework Statement
We have a sphere with a polarization kr. I need to show that the electric displacement D=0 everywhere.
Homework Equations
∫closed surfaceD.dS=qfree
The Attempt at a Solution
qfree=0 everywhere so the flux of D is zero everywhere. Clearly D=0 everywhere does solve this, but so could possibly many other things - how do I show D=0 is the solution? This is a very niggly and annoying to think about! Thanks for any help.