Questions tagged [electric-fields]
For questions that utilize the concept of electric fields (commonly denoted by the letter E), or for questions whose answers likely involve electric fields. More specific than the [electricity] tag, as questions about the phenomenon & theory of electricity do not necessarily involve the discussion of fields.
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Why do same-charge particles repel each other? Would anti-particles exhibit the contrary behaviour? [closed]
Coulomb's Law states that same-charge particles repel each other and opposite-charge particles attract each other.
Coulomb's Law formula is:
This is related to Maxwell's equations:
An example of an ...
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Determine the magnitude and direction of the net electric field at P [closed]
I can't seem to understand this question, I can get the electric force between the charges using distance a but don't understand what I should do after that.
The electric field is a vector and so two ...
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What charge distribuition generates this kind of field? [closed]
I was doing some exercieses in electrostatics, and the following field showed up:
$$\vec E(x,y,z)=\frac{10}{\epsilon_0 r^2}[1-e^{-2r}(1+2r+2r^2)]\hat r$$
And although this isn't part of the problem, ...
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Regarding the Lorentz force:
I know that the Lorentz Force law states that:
$\vec{F} = q\vec{E}+q\vec{v} \times \vec{B}$
And then for the magnitude of the force, where $q_2$ is the moving charge:
$E = F/q_2$, and therefore $E =...
user239757
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Algorithm to calculate path of vector field line between two charges [closed]
I have a program that can draw a line between two charges. However I need a function or basic algorithm in order to draw the correct line which is always tangential to the vector field.
This is not ...
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Electric Field Topology in a Wire - Exact Duplicate [closed]
1. How is the electric field set up in a wire by a battery so that we can assume that potential at a node is constant?
2. What happens to the electric field across a resistance which makes voltage '...
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What would happen to the electric field if the charge it produced suddenly disappeared? [closed]
Suppose we have a charge $q$, which produces an electric field $E$. As the title says, I want to know what will happen to the electric field (E) if the charge q disappears suddenly? Does the electric ...
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Can I describe whole Electromagnetism only with electric field $\vec{E}$?
Is it possible to write all Maxwell's equations only in terms of $\vec{E}$ (without $\vec{B}$)? The common formulation of Electromagnetism is governed by the equations below:
The Lorentz Force: $$\vec{...
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Using integrals in electric field in ring [closed]
When finding the electric field due to a ring. We take on the cos component as the sin component gets cancelled out. Now if we integrate the sin component of the electric field of the sin component ...
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Composition of energy of electron? [closed]
Mass energy of electron is 0.510 998 9461MeV/ c2
1) Does it include energy of electron due to electric field too?
2) If yes, how much?
I am more interested in second part.
Links:Here John Rennie ...
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What does $e$, $i$ and $\vec{p}$ mean in this formula? [closed]
I've found a formula to calculate the $\vec{E}$-field vector of a Hertzian dipole in the far field (don't know if that's the correct term) to draw and simulate the field lines.
Link to my source: ...
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When the net force is zero, the torque is independent of origin [closed]
What does this mean in case of a permanent dipole in a uniform electric field?
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In General Relativity can electric field-induced tension in a Bose-Einstein Condensate reduce the energy needed to create an anti-gravitational field? [closed]
This is my theory showing how an electric field can create an anti-gravitational field. It is based on Einstein's General Relativity (GR), and the ability of an electric field to induce tension in ...
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Electric field due to infinite line of charge [closed]
In my textbook it derives the electric field due to an infinitely long linear charge using a cylindrical Gaussian surface. However, if I take a finite-length linear charge, and draw the same cylinder, ...
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Are dc and ac currents produce electric field? [closed]
I have four different situation and i want to learn what kind of field (electric or magnetic) each produces and which produces electomagnetic waves?
1)dc current flow in a conductor
2)ac current ...
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