Questions tagged [magnetic-fields]
For questions that utilize the concept of magnetic fields (commonly denoted by the letter B), or for questions whose answers likely involve magnetic fields. More specific than the [magnetism] tag, as questions about the phenomenon & theory of magnetism do not necessarily involve the discussion of fields.
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A question on modified flux function under perturbation [closed]
Given a magnetic field $\mathbf{B}=B_{0}\left(\dfrac{xz}{z_{s}^{2}},\dfrac{yz}{z_{s}^{2}}, 1-2\left( \dfrac{x^{2}}{r_{s}^{2}}+\dfrac{y^{2}}{r_{s}^{2}}\right) -\dfrac{z^{2}}{z_{s}^{2}}\right)$ with the ...
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Visualizing or Interacting with the Higgs Field
I'm not a physicist, but I'm curious about how one could "see" or "interact" with the Higgs field in a visual way. For instance, placing ferrite dust on a table with some magnets ...
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Length of helix in one time period [closed]
How to find the length of a helix in one time period?
In the case of a particle suspended at the origin and a magnetic field along the $y$ axis we know that the time period will be equal to $2\pi/aB$ ...
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What is the size of the magnetic field in the first, second and third case? [closed]
A single turn circular loop is formed from a very long wire in three different ways as shown in the figures.
The radius of the circular loop is R = 17.2 cm and the wire carries the same electric ...
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Why did static magnets make ice melt faster?
I made the following pilot experiment. I made 2 cubes of ice 3x4x5 cm (HxWxL) from tap water in 2 containers obtained from a cheese package (it has silver-looking reflective interior and is made from ...
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What is the magnetic field at point P & Q? [closed]
Two very long, straight and parallel wires carry electric currents of I1 = 16.1 A and I2 = 25.9 A respectively in the directions shown in the figure.
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What exactly is intensity of magnetization and magnetic field intensity?
What is intensity of magnetization (I) and magnetic field intensity (H)? What is the difference between them?
I saw some similar questions but I either didn't understand the answers or I understood ...
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Linear approximation of the magnetic dipole field
Summary: using 3 angles to represent a magnetic dipole's orientation is redundant because the rotation around the $z$-axis of the dipole does not change the magnetic field, there are only 2 DOFs for ...
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Work done by Lorentz force
our teacher asked a conceptual question. Let two infinite straight wires carrying current in the same direction be suspended in vacuum near each other. the wires tend to get attracted due to the ...
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Why is flux of magnetic field always zero for closed surfaces?
I'm having troubles accepting that the magnetic flux through a closed surface is always zero. I understand the fact that no magnetic monopoles exist , therefore all the 'lines' of magnetic flux that ...
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Relation between Earth's and Sun's magnetic axis relative to their paths of travel and relative to each other?
Pretext
As non-educated citizen with no academic background, and based on watched PBS Space Time's latest video I've got curious, what's the relation between Earth's and Sun's magnetic axis relative ...
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Orientation of Magnetic Induction of a Dipole Source in MEG
I am working with source-reconstructed MEG data, and what I would like to know is that
when we obtain the magnetic induction (using the right-hand thumb rule) of a dipole source, is it only the ...
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ELF Electromagnetic wave propagation in plasma (ionosphere) - how?
Can an extremely low-frequency electromagnetic wave (below 500 Hz for example) propagate through an ionosphere? The cutoff frequency of Earth-ionosphere waveguide is approximately 1.7 kHz so I ...
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Magnetic field in different frames
If I move at the same velocity as that of a charge Q, I wouldn't be able to feel its magnetic field because it is stationary with respect to me.
However, if I am to place a magnetic compass needle ...
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Magnetic energy associated with an intrinsic dipole
Generally for an Amperian dipole we have:
Magnetic energy when it is placed in a uniform magnetic field is $\vec m \cdot \vec B$.
We can define "a fake kind of energy" [Feynman] that can ...
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