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Additional resources for American Electricians´Handbook
Susceptance (B or b) is the component of the admittance which results in no loss of power from the circuit. It is measured in mhos. It does not exist for a dc circuit. 55. Conductivity. The relative ease with which an electric current can be passed through a material is called its percentage conductivity. The conductivity of pure annealed copper is taken as the base, so that pure annealed copper is said to have 100 percent conductivity. 371 ⍀/mil и ft at 20ЊC. 371 by the percentage conductivity of the material.
Matter is conserved and cannot be created or destroyed (except by thermonuclear reactions, which are not covered in this book). It is evident that there is in the universe a certain definite amount of electrically charged particles. Therefore electric charge, like matter, is conserved and can neither be created nor destroyed. It can, however, be forced to move and thus transmit power or produce electrical phenomena. Electrical energy (not electricity) can be generated (produced from energy of some other form) by forcing electrons to move in certain paths.
27? SOLUTION An entire circuit is shown. It is composed of a dynamo, line wires, and a resistance coil. The emf developed by the dynamo (do not confuse this with the emf impressed by the dynamo on the line) is 120 V. The resistance of the entire circuit is the sum of the resistances of dynamo, line wires, and resistance coil.