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7. An electric power station that operates at 25 kV and uses a 10:1 step-up ideal transformer is producing 36 MW (Mega-
Watt) of power that is to be sent to a big city which is located 270 km away with only 1.5% loss. Each of the two wires
are made of copper (resistivity = 1.72 × 10−8 №.m). What is the diameter of the wires?
cm

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