All Questions
Tagged with equilibrium electrostatics
56
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Doubt regarding proof of Earnshaw's Theorem using Gauss's theorem
While proving Earnshaw's theorem using Gauss's theorem, we consider a small sphere surrounding our test charge, and apply Gauss law on this sphere, stating that field from all external charges must ...
- 428
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65
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Why charges reside only on the surface on conductor?
I wonder why charges reside only on the surface on conductor?
And I read this question and the answer to it:
Why charges reside on the surface on conductor?
https://physics.stackexchange.com/a/210634/...
- 117
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1
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28
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Equilibrium constellations of classical point charges in hollow conductors
As far as I know, in free space there can be constellations of $N$ point charges in electrostatic equilibrium (albeit unstable equilibrium) for all $N$ except $N=2$.
Some discussions here already ...
- 4,913
-1
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3
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59
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Contradicting Basic and Force definitions of types of Equilibrium
This question is neither a check my work question and nor a homework question, it is a conceptual doubt in a question I found and I have attached a solution just for reference to show how I drew my ...
- 201
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27
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Repulsive charges in bounded potential
I'm interested in Centroidal Voronoi tessellation especially on disk.
When I got these diagrams, I thought I saw something like this
Looks like a relaxed distribution of identical charges inside the ...
- 163
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36
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Equilibrium position of $ n $ free charges as polynomials roots
The classic problem of the electrostatic equilibrium positions of a linear system of $ n $ free unit charges between two fixed charges is well known, here an example with $n = 1$.
Few days ago I found ...
- 101
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1
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41
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Charge distribution on a discharged conductor
Question
I am trying to prove that given a conductor with zero net charge on it then the charges necessarily distributes on its surface so that the density is zero at every point.
We can assume the ...
- 402
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76
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How will the charges redistribute among the 2 charged balls with different materials and different radius when they are touched?
How will the charges redistribute among the 2 charged balls with different materials, different radius when they are touched?
If the 2 balls have the same material, then we have:
$$q_1 + q_2 = q'_1 + ...
- 3
3
votes
2
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335
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Points where electric field is zero when charges are present at vertices of a regular polygon
There is a $n$-sided regular polygon with a charge $q$ at each vertex. I know that there are $n$ points, other the center of the polygon, where the electric field is zero. But why is this so? Is there ...
- 192
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2
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393
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What is the meaning of a conductor in equilibrium?
Electric field lines are always perpendicular to the surface of a conductor in equilibrium.
what is the meaning of a conductor in equilibrium?
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Equilibrium of electrostatic potential
we often talk about the similarities between the temperature and the electrostatic potential. However, we do not know of exact analogue of the Heat diffusion equation $\nabla^2{T}=\alpha\frac{\partial ...
- 91
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1
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Unstable Equilibrium of electric force [closed]
$q_1=8q$
$q_2=-2q$
There is a proton at $L$ and $2L$ distance from $q_2$ and $q_1$ respectively. At these distances net force is zero on proton. If we displace proton leftward both forces increases ...
- 153
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2
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307
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Does the same point continue to be the neutral point when the system of charges start to move closer or away?
Consider two point charges $+q_1$ and $+q_2$ separated by a distance $r$. A charge $$q_0 ≠ -\frac{q_1q_2}{(\sqrt{q_1}+\sqrt{q_2})^2}$$ (n.b. the equality holds only when $$\vec{F}_{net,q_1} = \vec{F}_{...
- 312
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341
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Equilibrium of a system of charges
Suppose three positively charged particles are constrained to move on a fixed circular track. If the charges were all equal, an equilibrium arrangement would obviously be a symmetrical one with the ...
- 980
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4
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489
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If we have a net negative charge in a spherical conductor, why negative charges goes to the surface?
So imagine that we have a set of net negative charges, in physics books they said that this set of charges goes to the surface because they repel each other in such a way that this reach to an ...
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