Lag1989 task №15.20

Lag1989 task №15.20

Wiring from the main to the building is carried out by a wire of resistance r = 0,5 Ohm. The voltage in the mains is constant and equal to U0 = 127V. Find the maximum possible power in the building P, if the voltage on the devices included in the network should not fall below U = 120V.

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