Throughout the world the system used for home electrification is alternating current (AC).
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DC current is not used in home wiring. It may be used to power a door bell, alarm system, under counter lights, etc, that uses a transformer powered by AC that converts the power to DC. Other than that homes are wired for AC current only.
A house typically uses alternating current (AC) for its electrical power supply, as it is more efficient for transmitting electricity over long distances. However, some devices within the house, like electronics and appliances, may convert AC to direct current (DC) for their operation.
The type of electricity typically used in homes is alternating current (AC) electricity.
A light switch itself does not produce electric current. It simply opens or closes a circuit. The type of current flowing through the circuit will depend on the power source supplying the electricity, which could be either AC or DC.
An inverter is the apparatus that changes direct current (DC) to alternating current (AC). It does this by converting the fixed voltage and direction of DC electricity into an oscillating voltage and alternating direction of AC electricity.