Check my understanding of voltage please

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A chemical reaction in a battery causes zinc to become negatively charged and copper to become positively charged, leading to electron flow from positive to negative terminals. This flow is resisted by the electric field at the negative terminal, and the energy required to move charges is defined as voltage. The concept of "work" is central to understanding physics, as it relates to energy transfer in various domains, including electrical systems. While some find the term "work" to be circular, it remains a fundamental aspect of energy conversion. Understanding these concepts is crucial for grasping how batteries function.
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From what I understand, when a chemical reaction within the battery occurs, the zinc becomes negatively charged and the copper rod becomes positively charged. When an electron flows from "+" to "-", it is resisted by the electric field by the negative terminal. The chemical reaction does "work" (that word makes me cringe) on the charges to move it to the negative terminal. That amount of work per unit of charge is voltage.

I'm a physics newbie, so please bear with me! :smile:
 
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Very good. It does indeed take work to achieve this. Why does the word "work" make you cringe? If I could summarize all of physics in one word, "work" or "energy" would be that word.

Work/energy is what physics is all about. It manifests itself in 6 domains, electric, magnetic, mechanical, thermal, electromagnetic/photon, & chemical.

"Work" is the correct way of looking at batteries and any other energy conversion device.

Claude
 
Work isn't really that bad, it's just that work and energy are circular concepts. But I can live with that. :smile:
 
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