A high transmission line voltage reduces copper losses and p

A high transmission line voltage reduces copper losses, and permits the transmission of more power. Explain this statement briefly.

Solution

Ans) For a high transmission voltage V the current required I is less for the same power transmitted P

as P=V*I gives I=P/V i.e current is inversely proportional to the Voltage For higher voltages current required is less.

Let the transmission line having resistance R its copper loss is Wcu=I^2*R which says smaller the current

lesser the loss .So we can conclude that high transmission voltage reduces current which inturn reduces copper losses

As power output =Power input - losses

which says lesser the losses more the power transmitted

so finally we can say that A high transmission line voltage reduces copper losses, and permits the transmission of more power