The relationship of one of Maxwell's equations to Coulomb's Law

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Discussion Overview

The discussion revolves around the relationship between one of Maxwell's equations and Coulomb's Law, exploring the equivalence of these concepts in the context of electrostatics. Participants seek to understand how Maxwell's equation can be derived from Coulomb's Law and vice versa, with a focus on theoretical implications and mathematical derivations.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant states that Maxwell's equation, specifically the divergence of the electric field, is equivalent to Coulomb's Law, as presented in their textbook.
  • Another participant suggests looking up a derivation on Wikipedia, indicating that there is existing literature that explains the relationship.
  • A different participant proposes using the integral form of Maxwell's equation and applying it to a spherical volume with a point charge at the center to demonstrate the equivalence through symmetry.
  • One participant reiterates the equivalence, noting that starting from either Maxwell's equation or Coulomb's Law allows for the derivation of the other.

Areas of Agreement / Disagreement

Participants express varying levels of understanding and seek clarification, indicating that while some agree on the equivalence of the two laws, the discussion remains unresolved regarding the specifics of the derivation and the underlying concepts.

Contextual Notes

There are limitations in the discussion, such as the lack of detailed explanations or derivations provided by the textbook, and the dependence on the participants' interpretations of the mathematical forms of the equations.

MaestroBach
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My textbook tells me that one of Maxwell's equations, namely divergence of E = 4pi * charge density (in cgs) or divergence of E = pi / epsilon nought (in SI) is exactly equivalent to Coulomb's Law.

How in the world is that so?

Any ideas would be appreciated.
 
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Have you tried Googling? The Wikipedia page has a derivation - what don't you understand about it?
 
MaestroBach said:
Any ideas would be appreciated.
Maxwell’s ##\nabla\cdot\vec{E}=\rho/\epsilon_0## can be rewritten in an integral form. Try applying that integral form to a spherical volume with a point charge in the center, and taking advantage of the symmetry of that configuration.
 
MaestroBach said:
Summary:: Maxwell vs Coulomb

My textbook tells me that one of Maxwell's equations, namely divergence of E = 4pi * charge density (in cgs) or divergence of E = pi / epsilon nought (in SI) is exactly equivalent to Coulomb's Law.

How in the world is that so?

The textbook doesn't explain?! Starting with either one, you can derive the other. Thus they are equivalent.
 

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