Saturday 27 January 2018

electromagnetism - Metal Sphere in a Uniform Electric field


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An uncharged metal sphere of radius $R$ is placed in a uniform electric field $\vec{E} = E_0 \, \hat{z}$. The field will push the positive charges to the "northern" surface of the sphere, and the negative charges to the "southern" surface.


Griffiths in Example $3.8$ says that the sphere is an equipotential. But how do I know that?




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