E-field from uniformly distributed charges on sphere?

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A uniformly charged sphere produces an electric field at a point outside the sphere that is influenced by all individual charges on the sphere. The net electric field will primarily be in the X direction, as opposing forces in the Y and Z directions cancel each other out. Calculating the electric field in the X direction using Coulomb's law for each point charge will yield the same result as the electric field derived from Gauss's Law. This equivalence is supported by Newton's shell theorem. Understanding these principles is essential for analyzing electric fields from charged distributions.
yosimba2000
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So if I have a sphere of uniform charge distribution, the electric field at one point away from the circle would be affected by ALL individual charges distributed across the circle, right?

From the picture I drew, there would only be a net effect of E-field in the X direction because there would be equal opposing forces in the Y-direction as well as Z-direction, right?

If I added up all the electric fields in the X-direction at that point using Coulomb's law for each point charge on the sphere, would it also match the E-field calculated from Gauss's Law?

I've drawn a top-down picture here: https://imgur.com/a/kAQjS
 
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yosimba2000 said:
I've drawn a top-down picture here: https://imgur.com/a/kAQjS

In future always try and post images to the thread ... It's much easier for people to discuss the query :smile: ...

Vh1nr8S.gif


there we go :wink:
 
is the sphere hollow or solid ?
Is point P a charge or are you just wanting to know what the E-field is at that point ?

for a Gaussian hollow sphere have you come across this in your studies ? ...

upload_2017-10-9_15-30-45.png
Dave
 
yosimba2000 said:
So if I have a sphere of uniform charge distribution, the electric field at one point away from the circle would be affected by ALL individual charges distributed across the circle, right?
Yes
yosimba2000 said:
From the picture I drew, there would only be a net effect of E-field in the X direction because there would be equal opposing forces in the Y-direction as well as Z-direction, right?
Yes, so long as the center of the sphere and point p are both on the x axis.
yosimba2000 said:
If I added up all the electric fields in the X-direction at that point using Coulomb's law for each point charge on the sphere, would it also match the E-field calculated from Gauss's Law?
yes, this is a result of Newton's shell theorem https://en.wikipedia.org/wiki/Shell_theorem.
 

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