All Questions
Tagged with magnetic-fields dipole
6
questions
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How are the magnetic field lines in a electric dipole formed (step by step and graphically)?
The following picture shows how an oscillating electric dipole generates closed electric field lines step by step (it is common to find those picture in textbooks).
But how are the magnetic field ...
- 2,617
7
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1
answer
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Why is the geomagnetic north pole at a different location from the magnetic north pole?
According to this site
Magnetic North, Geomagnetic and Magnetic Poles
The Geomagnetic poles (dipole poles) are the intersections of the Earth's surface and the axis of a bar magnet hypothetically ...
- 171
5
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3
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Why does magnetic force vary in proportion to the cube of the distance instead of the square?
Magnetic forces vary from gravity and electromagnetic radiation (such as light) in that gravity and radiation diminish by the square of the distance from the source, but magnetism diminishes by the ...
- 4,494
3
votes
1
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780
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Point particle with a magnetic dipole?
I have read these questions:
Are contravariant basis vectors and basis 1-forms identical?
Where John Rennie's answer says that electrons do have an electric dipole moment and we imagine that in math ...
- 29k
15
votes
3
answers
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Electromagnetic field energy "paradox"
The starting point is the energy density in electromagnetic fields:
$$ u = \frac{1}{2} \left( \epsilon_0 |\mathbf{E}|^2 + \frac{1}{\mu_0} |\mathbf{B}|^2 \right) \tag{1}$$
The "paradox" is if we use ...
- 1,289
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What is the strength of magnetic flux density inside a magnet?
I am trying to simulate the magnetic flux density in 3D space. I can get B by following model which is a dipole's contribution to the magnetic field at a point.
However, the strength of B is wrong ...
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