What Is the Role of Voltage in Battery Functionality?

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Voltage represents the difference in electrical potential between two points, crucial for understanding battery functionality. In batteries, one terminal has a higher electrical potential due to chemical reactions occurring within the battery, creating a flow of electrons. This difference in potential drives the current when the battery is connected in a circuit. The chemistry of the materials used in the battery determines the voltage produced. Understanding these principles is essential for grasping how batteries operate effectively.
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I have a few questions about voltage. In my physics class we learned that voltage was the difference in electrical between two points. The way that it was explained was the change in potential energy moving an electron from one point to another in an electric field. This makes sense to me but I don't understand how this applies to something like a battery. How does one end of a battery have more electrical potential than the other end?
 
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