Why is it that power lines run at high voltages outside the city? Please explain using resistance, voltage, current and power.
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For a given wire size and transmitted power, resistance losses scale as the inverse SQUARE of voltage.
P = I*V
I = P/V
The resistive voltage drop in a wire of resistance R is I*R
The power lost is I*V, so the power lost is I²R
Since I = P/V, power lost is P²R/V²
P = I*V
I = P/V
The resistive voltage drop in a wire of resistance R is I*R
The power lost is I*V, so the power lost is I²R
Since I = P/V, power lost is P²R/V²
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Call your electric company