How an electromagnet is used in a starter motor?

In a starter motor, an electromagnet is used to engage the motor's pinion gear with the engine's flywheel. When the ignition key is turned, electrical current flows through the coil of the electromagnet, generating a magnetic field that attracts a movable armature. This movement pushes the pinion gear into contact with the flywheel, allowing the starter motor to crank the engine. Once the engine starts, the current is cut off, and the electromagnet releases the pinion gear, disengaging it from the flywheel.