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Household electricity is **AC (Alternating Current)**. In most homes, the electrical system is designed to supply power as AC, which changes direction periodically. AC is preferred for residential use because it's easier and more efficient to transmit over long distances compared to DC (Direct Current).
In the U.S., for example, the standard household voltage is **120V AC** at **60Hz** (60 cycles per second). In other parts of the world, like Europe, it's typically **220-240V AC** at **50Hz**.
Some devices within the house, like electronic devices or batteries, might use DC internally (such as in phones, laptops, etc.), but the power supplied to the house is AC.
In the U.S., for example, the standard household voltage is **120V AC** at **60Hz** (60 cycles per second). In other parts of the world, like Europe, it's typically **220-240V AC** at **50Hz**.
Some devices within the house, like electronic devices or batteries, might use DC internally (such as in phones, laptops, etc.), but the power supplied to the house is AC.