What type of current is typically used in residential electrical systems?

Residential electrical systems primarily utilize Alternating Current (AC) because of its efficiency in transporting electricity over long distances. AC current can change direction periodically, allowing it to be transmitted over power lines with less energy loss compared to Direct Current (DC). This property makes AC the preferred choice for powering homes, as it efficiently powers a wide range of household appliances and lighting.

The infrastructure that supports residential energy distribution, including transformers and circuit breakers, is designed for AC. This system allows for voltage transformation, which is necessary to reduce high transmission voltages to a safer level for household use. Additionally, AC is favored because it can easily be generated and distributed through power plants and the grid.

Pulsed Current and High Frequency Current are not commonly used in standard residential applications, as they are more relevant in specialized equipment and treatments in areas such as electronics, medical devices, or certain therapeutic practices. Thus, the predominance of AC in residential wiring and appliances makes it the typical choice for household electricity.