E-field from uniformly distributed charges on sphere?

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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.