The book Elementary Treatise On Electricity And Magnetism was written by author George Carey Foster Here you can read free online of Elementary Treatise On Electricity And Magnetism book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Elementary Treatise On Electricity And Magnetism a good or bad book?
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97 may suggest the electric field set up when the terminals of a battery, "B, are con- nected by wires with the surfaces of a condenser, c : the fine lines in the figure represent roughly the distribution of lines of force. If now the plates of the condenser be connected for an instant with each other, the lines of force between them disappear, but new lines immediately take their place. Lines previously extend- ing between the connecting wires close in upon the condenser and are followed by fr...esh lines generated by the battery, the ends of the lines travelling along the wires. We have already seen (22) that a surface from which lines of force start is what is otherwise called a positively electrified surface, and that a surface 105] ELECTRIC CURRENT 149 on which lines terminate is negatively electrified. It follows that when lines of force flow through the dielectric medium from the battery to the condenser, their ends at the same time moving along the connecting wires, that the process may be otherwise described as a flow of positive electricity from the positive terminal of the battery along one wire to the corresponding plate of the condenser, and of negative electricity from the negative terminal along the other wire to the second plate of the condenser.
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