Задача 31382.

What lamps rated at 300 W, intended for a voltage of 110 V, it can be installed in parallel in a building, if the wiring line made from copper wire 100 m in length and cross-sectional area of 9 mm^2, and the voltage in the line is equal to 122?

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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