Fundamentals of the Classical Theory of Electromagnetic Fields
Charge is one of the fundamental physical quantities in terms of which all other physical quantities can be ultimately defined. The charge associated with an object is a measure of its electrical content. In nature charge is found in two forms, positive and negative charges. Objects possessing similar charges repel one another, whereas objects possessing dissimilar charges attract one another. Matter is made up of atoms that are composed of a positively charge nucleus surrounded by a “cloud” of electrons. In its ground state an atom has no net charge, being the positive and negative charges perfectly balanced.
KeywordsElectromagnetic Field Classical Theory Closed Surface Displacement Current Electric Moment
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