GEOLOGY

Detailed explanation-1: -The primary reason that power is transmitted at high voltages is to increase efficiency. As electricity is transmitted over long distances, there are inherent energy losses along the way. High voltage transmission minimizes the amount of power lost as electricity flows from one location to the next.

Detailed explanation-2: -Electricity is transmitted at high voltages to reduce the energy loss that occurs over long distances. Power is usually transmitted through overhead power lines.

Detailed explanation-3: -Transmitting electricity at high voltages over long distances reduces the energy loss due to the joule heating.

Detailed explanation-4: -But because high current results in more power lost to resistance in the power lines, transformers are used in high voltage power lines to step down the voltage. Between the transformers, high voltage in the lines delivers electric power with less loss than if high current flowed through the lines.