All Questions
Tagged with electric-fields forces
109 questions
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Intensity of electric field [duplicate]
Intensity of electric field at a point is defined as the force felt by a charge at that point due to the charge creating that field. Why then do we divide the force from Coulomb's law by the charge? ...
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Thought experiment and possible contradiction between electromagnetism and special relativity (Part II)
A new thought experiment has recently crossed my mind to which I could not find a clear solution as yet. Assume that an observer $B$, holding a magnet, moves inside an electric field of $E_y$ at $v$ ...
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What happens when both magnetic field and electric field is applied to a charged particle?
Now what exactly happens when magnetic field and electric field is applied perpendicularly? What happens when they are not perpendicular?
In the question, it says that a magnetic field and electric ...
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Why don’t charge carriers constantly accelerate in an electric circuit?
With my current knowledge of electric circuits and electrostatic fields, I would expect that the electric field generated by the potential difference of, say, a cell should exert a constant force upon ...
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A question about Coulomb's law for one moving and one stationary charge
let one charge is moving and another charge is stationary (compulsory). Then the electric force between them can be calculated by coulomb's law?
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If the charge density is constant, then how can it be depend on distance?
Imagine we have some constants like 1,2,3 etc. Then how can they be dependent on any other thing?
The same is the case with charge density: whether it be volume charge density, surface charge density,...
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Where does the factor $\frac{1}{2}$ come from in the force equation $\vec{F}=\frac{1}{2}Q\vec{E}$?
Generally, I have seen equations like $\vec{F}=Q\vec{E}$ which obviously makes sense. However, in the case of a capacitor where the force experienced by each of the plates (having charges $\pm Q$ and ...
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The force experienced on a charge, using macroscopic quantities
Zangwill says (Zangwill, Modern Electrodynamics, 2012 edition, page 40, undersection 2.3.1, "Lorentz Averaging")
...An example is the force on the charge density $\rho$ and current
density $...
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Ratio between electric and magnetic forces
Suppose I have two beams of electrons moving at speed $v$ separated by a distance $d$. I can work out magnetic and electric forces between them...
For the magnetic force, we treat the two beams wires ...
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Time lag for generation of electrostatic force
Suppose we make a certain point in space charged. Say we impart some negative charge, such that electrostatic condition is maintained.
Then, after the point gets charged will the electric field due to ...
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Forces acting inside conductor in an electric field
In the book on electrostatics and magnetism by Purcell. In the third chapter he mentions about conductors in the electrostatic field.
In the static situation there is no further motion of charge. You ...
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Opposite charges canceling out
I know that when two unlike charges brought near, they will attract and cancel out each other.
So my question is what does cancel each other mean? Does they combine and form a neutral charge? I mean ...
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U-shaped magnet and the moving charge: Where is the origin of the Lorentz force from the viewpoint of the moving charge?
Assume that a charge $+q$ is located at rest between the poles of an infinitely long U-shaped magnet, which is laid along the $x$-axis. If the charge slowly accelerates to a velocity $v$ along $x$ and ...
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How to find a No Flow Boundary intuitively or exhaustively for an electric field simulation?
Apologies as this is my first time posting here.
I am trying to simulate Electric Fields and lines of force using pygame to find no flow boundaries. I wrote some crude code and was able to come up ...
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Is the electric field a Force?
Coloumb force that act between two charges is equal to :
\begin{gather} F=KQ_{}Q_{0}/r^2 \end{gather}
And this Coloumb force has units of Newton .
But the electric field is defined as
\begin{gather} E=...
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