What is the role of the alternator in a vehicle?

The alternator plays a crucial role in a vehicle’s electrical system. Its primary function is to charge the battery while the engine is running and to provide electrical power to the vehicle's systems. When the engine operates, the alternator converts mechanical energy from the engine into electrical energy through the process of electromagnetic induction. This electrical energy not only replenishes the battery but also powers vital components such as the headlights, radio, and onboard computers.

By maintaining the battery’s charge, the alternator ensures that these electrical systems function properly when the engine is on, thereby preventing battery drain and ensuring the vehicle remains operational. In summary, the alternator is essential for the overall electrical health of the vehicle, supplying power and keeping the battery charged.