Sun May 13, 2012 By: Saara Acharya

why do the electric field lines enter or leave the surface of the conductor perpendicularly?

Expert Reply
Sun May 13, 2012
 If it wasn't perpendicular, there would be a component of the field along the surface. A charge experiencing that field would move along the surface in response to that field, which is inconsistent with the conductor being in equilibrium.
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