Which statements must be true about the surface of a charged conductor in which no charge is moving? (There could be more than one correct choice.) a. The electric field is constant at the surface. b. The electric field is zero at the surface. c. The electric potential of the surface is zero. d. The electric potential is constant over the surface. e. The electric field is perpendicular to the surface.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.