Which type of current is primarily used by household appliances?

Household appliances primarily use Alternating Current (AC) because it is the standard form of electrical power supplied by utility companies for residential use. AC is advantageous for home use due to its ability to be easily transformed to different voltage levels, making it more efficient for long-distance transmission. This efficiency helps to minimize energy loss during the transmission process.

Additionally, many appliances, such as refrigerators, microwaves, and washing machines, are designed to work optimally with AC. The motor and heating elements in these devices are engineered to harness the sinusoidal waveform provided by AC, which enables them to operate effectively and rely on the alternating nature of the current for their functions.

In contrast, Direct Current (DC), while used in batteries and some electronic devices, is not the primary source of power in homes. High frequency Current (HFC) is not typically used for household applications but has specific uses in communications and radio technologies. Reactive Current (RC) pertains to the component of AC that does not contribute to power but is associated with the energy stored in inductive and capacitive components, which is not a relevant concept in the context of household usage. Therefore, AC is the definitive choice for household appliances.