So imagine your toy car runs on batteries, but it needs electricity to keep moving. How do we keep giving it electricity if the batteries run out?
An automotive alternator is like a little generator that is attached to the engine in a real car. It helps create electricity to keep the car's battery charged up and ready to go.
When you drive the car, the engine makes something called a crankshaft spin around. The alternator is also attached to the crankshaft, so when the crankshaft spins, the alternator spins too.
As the alternator spins, it uses something called a rotor and a bunch of wires to create electricity. This electricity is sent to the car's battery, which keeps it charged up and ready to power the car's engine and other electrical things, like the radio or the headlights.
So there you go, an automotive alternator helps keep a car's battery charged up, so it can keep the car's engine and other electrical things running smoothly.