Gauss's Law - Physics

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Question

A conductor is placed in an electric field under electrostatic conditions. Which of the following statements is correct for this situation?

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Answer

A conductor is defined as a object free to move charges. In particular, valence electrons, which are the outer most electron in each atom and the most free to move, travel inside the conductor until the net electric field inside the conductor is zero. These electrons will move until this condition has been met. Because of the presents of charged particles at the surface and the condition that they are no longer moving, any electric field at the surface must be perpendicular to that surface.

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