What is the role of the alternator in a vehicle?

The role of the alternator in a vehicle is to charge the battery and power the electrical systems while the engine is running. When the engine is operating, the alternator generates electrical energy, which is essential for running various components such as the headlights, radio, and air conditioning. It converts mechanical energy from the engine into electrical energy, ensuring that the battery remains charged and capable of powering the starting system and other electrical devices when needed. This continuous supply of electricity while the vehicle is running is vital for the proper functioning of both the battery and the electrical systems in the vehicle.