changing the transmission lines · Physics Brawl 2023 #4

Physics · electromagnetism

Problem

We have a transmission line with high voltage U₀ = 110 kV, and we would like to increase it to extra-high voltage U₁ = 400 kV. Assuming the resistance of the line is constant, how much will the power losses on the line change? We are interested in the power loss ratio P₁/P₀. Karel thought about changing the transmission lines.

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