How Does Coulomb's Law Apply to Non-Point Charged Particles?

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Homework Help Overview

The discussion revolves around the application of Coulomb's Law to non-point charged particles, specifically focusing on the electrostatic interactions between charged spheres.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants explore the appropriate equations for describing interactions between non-point charged particles, with an emphasis on spherical shapes. There is a mention of integrating over infinitesimal charges for different shapes.

Discussion Status

Some participants have provided guidance on using point charge formulas for spherical shapes, while others emphasize the need for further exploration and understanding of the underlying calculus involved.

Contextual Notes

The original poster specifies a focus on spherical charged particles, which may influence the discussion on applicable equations and methods.

mather
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hello!

which equation descripts the electrostatic interaction between two non-point (ie. that have dimensions) charged particles?

thanks!
 
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That would be different for every shape! Start with the formula for point charges and integrate over all the infinitesimal charges in the shape. Spheres work out nicely; other shapes do not.
 
Yeah, i want for spheres only, forgot to mention
 
For spheres, just use the point charge formulas - as if the entire charge was located at the center point. Make a note that you need to work that out for yourself once you take 3D calculus.
 

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