All Questions
Tagged with electromagnetism forces
103
questions with no upvoted or accepted answers
1
vote
1
answer
35
views
Getting the force somehow using magneticfield force (tesla)
First off, sorry if not everything makes sense, english isn't my first language so some scientific terms may sound weird if they're in English. For a project we are making a coil gun. So we get a ...
- 11
1
vote
1
answer
61
views
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 $...
- 702
1
vote
1
answer
132
views
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 ...
- 2,456
1
vote
1
answer
205
views
Force acting on a negative particle in a magnetic field
I have recently learned about magnetic fields and particles. The recent one I have learnt is the right hand rule. The force F acting on a negative particle is always opposite to the force we get from ...
- 11
1
vote
0
answers
26
views
Why does a magnet arranged in a magnetic accelerator propogate a wheel forward?
My question is related to an interesting video i saw on magnets. The link of the video is here https://youtu.be/iyv9GhaITNE , in this video at 1:52 of the video we see the wheel is moved forward but i ...
1
vote
1
answer
92
views
Magnet A exerts an magnetic force $F_1$ on magnet B, B exerts a Reactive force $R_1$ on A, B exerts an magnetic force $F_2$ on A, is $R_1=F_2$?
Let's suppose there are 2 magnets, A and B, that are within the magnetic field of each other. Then A will exert a magnetic force on B (let's name it F1), and, due to the 3rd law of Newton, every ...
- 151
1
vote
2
answers
100
views
How do we apply force on a body?
We know that force is apllied either by pushing or pulling anything.
But how do we push or pull or apply force on anything.
I imagine the object A that is pushing and another object B that is getting ...
user316791
1
vote
0
answers
28
views
Lorentz force transmitted to two nodes
A straight wire of length $L$ and direction $\vec{u}$ carrying a continuous current $I$ in the presence of a magnetic field $\vec{B}$ experiences a force (Lorentz force) equal to $\vec{F} = LI \vec{u}...
1
vote
0
answers
23
views
Question on thinking about an electric charge as multiple electric charges in special relativity
I understand that thinking about permanent magnets as a rotating loop of charged particles can be used to derive things like how an electric charge will be effected by the magnetic field, and to ...
- 2,001
1
vote
0
answers
37
views
Does the Lorentz force change when an electric current is under a magnetic field with negative permeability?
Most applications of the Lorentz force depend on the electric current passing by a material with positive permeability, normally ferromagnetic.
How much would change were the electric current to pass ...
- 441
1
vote
0
answers
21
views
Force on a moving charge in front of an infinite conducting wall
Let's say we have a charge $q$ at position $\vec{x}=(x_0,y_0,z_0)$ in front of an infinite conducting wall at $z=0$. If the charge is not moving, this problem can be easily solved by the method of ...
- 4,827
1
vote
1
answer
37
views
Can you induce motion by changing magnetic field on a body which isn't magnetic?
In this video demonstration of Lenz's law, the narrator starts with a substance which doesn't respond to the magnetic field of a bar magnet yet when he moves the bar magnet in relative motion to the ...
- 7,980
1
vote
0
answers
47
views
Unstable Equilibrium of hinged rods
I conjured up a scenario where there are two rods free to rotate about a hinge connected by their ends by spring of spring constant $k$,both their masses are $m$ and length $l$ and mass is uniformly ...
1
vote
0
answers
27
views
How can I find the potential energy and force between a steel sphere and a magnet?
I'm fine with certain simplifying assumptions being made, I currently only know high-school level physics (the simpler the better). Also, if anyone can explain the intuition behind formulae, I would ...
1
vote
0
answers
60
views
What should be the equilibrium field strength in the Hall effect?
I was taught in my course and have confirmed by looking in many sources that when there are moving charges (e.g. current in a wire) which are deflected due to the Lorentz force (Hall effect), the ...
