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The time rate of change of energy

10 votes

Why do we reduce only current to prevent power loss? Why not voltage?

When discussing the power output by the power station, we have $P=V_pI_p$, where the subscript $p$ indicates that it's at the power station. … The power loss through the transmission lines is $$P_l=V_tI_t=I_t^2R=\frac{V_t^2}R$$ However, by Kirchoff's Current Law, the current flowing from the power station is equal to the current flowing into …
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