Answer :
Final answer:
The correct answer is c) Cranks the engine to start it. When you turn the key of a car, the starter motor cranks the engine to start it, requiring a high current from the battery. The alternator then charges the battery and powers the car's electric system once the engine is running.
Explanation:
The correct answer is c) Cranks the engine to start it. When you turn the key of a car, the starter motor cranks the engine to start it. The starter motor is essentially a powerful DC electric motor that turns over the engine. It requires a significant amount of current to crank the engine, and thus, it is connected to the battery with large cables to carry this large current. When the engine starts, the alternator takes over, charging the battery and providing power to the car's electric system. This initial process is crucial for the car's operation, as without the engine cranking, the car would not be able to start. This explains why, when the battery does not have a charge, the car won't start, underscoring the importance of both the starter motor and a charged battery in the process of starting a car.
