It is better to send 10,000 kW of electric power long distances at 10,000 V rather than at 220 V because:
A)there is less heating in the transmission wires
B)the resistance of the wires is less at high voltages
C)more current is transmitted at high voltages
D)the insulation is more effective at high voltages
E)the iR drop along the wires is greater at high voltage

Question

Quizplus · Accepted Answer

The higher voltage reduces the current flowing through the wires, thereby reducing the heating effect (Joule heating) caused by the resistance of the wires. This makes it more efficient to transmit power over long distances.

It Is Better to Send 10,000 KW of Electric Power