When a car is running, its battery gets charged. How?

Explanation

To understand how a car's battery gets charged while the car is running, we can break down the process into several steps:

### Step-by-Step Solution:

1. **Understanding the Battery's Role**: The battery in a car is primarily used to start the engine and power electrical components when the engine is off. It stores electrical energy in the form of chemical energy.

**Hint**: Think of the battery as a reservoir of energy that gets used when the car is not running.

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