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Is car voltage AC or DC?

in Electrical Engineering

Is car voltage AC or DC?

1 Answer

Car voltage is **DC** (Direct Current).

Most car electrical systems, including the battery, work on DC because the car battery provides DC power to start the engine and run various electrical components (like lights, radio, and air conditioning). The car's alternator, which charges the battery, also generates AC (Alternating Current), but the power is converted to DC using a rectifier to match the battery's needs.

So, while the alternator creates AC, the system as a whole uses DC for everything inside the car.

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