Is this a correct definition of one volt?

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Discussion Overview

The discussion revolves around the definition of one volt, specifically examining the relationship between electrical potential energy and charge. Participants explore the mathematical formulation of this concept and its implications in different contexts.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant proposes that one volt is defined as the difference in electrical potential energy per unit charge being equal to one.
  • Another participant specifies that this definition applies when the source charge is spherical in a vacuum.
  • A third participant states that one volt equals one joule per coulomb, aligning with the proposed definition.
  • One participant notes that the equation provided yields units of joules per coulomb and seeks confirmation on the correctness of their statements.
  • Another participant challenges the clarity of the initial definition, suggesting that while electrical potential energy per unit charge is in joules per coulomb, it could also be expressed in other units, such as ergs, and that charge can be measured in electrons.
  • A later reply expresses gratitude for the clarification provided.

Areas of Agreement / Disagreement

Participants express differing views on the clarity and completeness of the definition of one volt, with some agreeing on the relationship between joules and coulombs, while others raise questions about the units and contexts involved. The discussion remains unresolved regarding the overall correctness of the initial definition.

Contextual Notes

There are limitations in the assumptions made about the context of the definition, particularly regarding the conditions under which the definition applies, such as the shape of the charge and the medium in which it is situated.

CraigH
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One volt is when:
The difference in (electrical potential energy per unit charge (q)) between two places equals one.

Where electrical potential energy equals

EPE at distance R from charge Q = (1/4piEpsilonNought) * Q/R

Is this Correct?

Thanks!
 
Last edited:
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*When the source charge Q is spherical in a vacuum
 
1 Volt equals 1 Joule per Coulomb.
 
The equation I gave would have units 1 Joule per Coulomb, I'm just wondering if everything I said was correct
 
You may have known that "electrical potential energy per unit charge (q)" is in "Joules per Coulomb but no one else can until you say so! Electric potential energy, like any energy, can be measured in ergs as well as Joules, and charge can be measured in "electrons" as well.
 
Ah okay, thankyou for answering!
 

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