How does car odometer work?

A car odometer measures the distance traveled by a vehicle, typically using a series of gears connected to the wheels. As the wheels rotate, they turn the gears, which in turn move a magnet that spins an electromagnetic coil, generating a magnetic field. This action causes a series of numbers on the odometer to increment, displaying the total distance on the dashboard. Modern vehicles often use electronic sensors to track wheel rotation and calculate distance more accurately.