Question

Explain why electric power is transmitted at high voltages and low currents to distant places

Answer 1

Wire resistance causes losses in electric power transmission. If you keep resistance constant, losses are directly proportional to voltage and the square or the current. If you double the voltage, for the same power the current is halved and power dissipation is effectively halved for the same power.

Another reason is that cable required for transmitting low currents has less cross sectional area and are lighter. So it is less expensive.

Hope it helps

Answer 2

Electric power is transmitted at high voltages and low currents to distant places because, to reach distance places for the use. As high currents waste more energy than low currents, electrical power is transported around the grid at a high voltage and a low current.