All Questions
144
questions
57
votes
4
answers
5k
views
Is there an underlying physical reason why the Coriolis force is similar to the magnetic component of the Lorentz force?
I couldn't help but notice that the expression for the magnetic component of the Lorentz force,
$$\mathbf F = q\,\mathbf v \times \mathbf B\,,$$
is very similar in its mathematical form to the ...
- 2,463
56
votes
13
answers
23k
views
Is there an intuitive explanation for why Lorentz force is perpendicular to a particle's velocity and the magnetic field?
The Lorentz force on a charged particle is perpendicular to the particle's velocity and the magnetic field it's moving through. This is obvious from the equation:
$$ \mathbf{F} = q\mathbf{v} \times \...
- 677
29
votes
11
answers
6k
views
Is there a more "physically mature" way to think about the right hand rule with electromagnetism?
I've always found using the righthand rule to remember how forces, B-fields, and particle velocities to be intellectually cheating myself a bit. It feels like being able to multiply numbers by using ...
- 719
26
votes
6
answers
36k
views
Where do magnets get the energy to repel?
If I separate two magnets whose opposite poles are facing, I am adding energy. If I let go of the magnets, then presumably the energy that I added is used to move the magnets together again.
However, ...
- 363
14
votes
4
answers
3k
views
Does rubber dust become magnetic?
My question is: if a rubber belt sustains wear, is it possible for the associated dust to become magnetic? A bit of background here: my workplace was recently contaminated by a fine layer of black ...
- 141
14
votes
7
answers
4k
views
Why does a charge need to have a velocity to experience force in a magnetic field?
While studying magnetism, I learned that force on a charged particle inside a magnetic field is
$$\mathbf{F}=q(\mathbf{v}\times\mathbf{B})$$
where all symbols have their usual meaning, which implies ...
- 161
8
votes
2
answers
9k
views
How to prove that the net force on an irregular current carrying loop in a uniform magnetic field is zero?
How to prove that the net force on an irregular current carrying loop
in a uniform magnetic field is zero?
I can prove it for regular shaped body like circular loops or rectangular loops.But how to ...
user74370
6
votes
2
answers
4k
views
Magnetic Force on a Ferromagenetic Material
I am currently working on a project involving solenoids, and I needed a force(Newtons, not a measure of magnetic field strength) equation. What I came up with after some digging around on the internet,...
- 1,340
5
votes
1
answer
23k
views
Do two magnets stacked on top of each other repel/attract stronger than just one magnet?
In designing a switch, I made it such that it "springs" back via two neodymium magnets (one in button repelling one in switch). I've found the magnets are too weak and don't spring back. I've resorted ...
- 239
5
votes
6
answers
2k
views
Lorentz Force and Apparent Conservation of Momentum Violation Useful for Unidirectional Force?
My understanding is that the apparent violation of Newton's Third Law by the Lorentz Force necessitates a description of the system that describes the "missing" momentum as being absorbed/carried by ...
- 51
4
votes
4
answers
5k
views
What is the *cause* of the Lorentz Force
Is it possible to explain what actually causes the force on a current carrying conductor in a magnetic field. I have read that this is due to the magnetic fields 'interacting' in some way.
This ...
- 195
4
votes
2
answers
2k
views
Two wires carrying current in same direction attract each other. But two proton beams repel each other. Why?
Why does two parallel currents attract each other when two proton beams repel each other?
- 49
4
votes
2
answers
418
views
Why would a moving infinite region of magnetic field exert an electric force?
I'm confused about the Lorentz force in relation to the frame of reference. There are many questions about that here, but I still don't get it. I've tried to break it down to the most basic example.
...
- 165
4
votes
1
answer
8k
views
What is equation to find force of magnetic attraction
I was wondering as a student, when I was playing with magnets I thought like Gravitational force equation of Newton's Gravitation Theory, can we also calculate force of an magnetic attraction on an ...
user43495
4
votes
3
answers
5k
views
Why is the magnetic force experienced by a current carrying wire perpendicular to the length of the wire?
I don't quite understand why the force is perpendicular, can somebody explain with a magnetic field diagram as to how the perpendicular direction is produced as a result of the interaction of the two ...
- 303