Linked Questions
11 questions linked to/from Why does a magnetic field "curl" around a current carrying element?
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Why do magnetic field lines behave the way they do?
I learned that the bar magnet makes a magnetic field and the field lines have a certain shape which kind of resembles two semiovals.
And if we pass current through a conductor then it makes a ...
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Why is the cross product used in electrodynamics [closed]
For example, $F = I \times B$. Why would the force be perpendicular to both the magnetic field and the current? Why would the resultant force be totally unlike its 2 sources; this could be likened to ...
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Why are magnetic field lines concentric circles and not a disc?
Let's take an example of magnetic field lines due to a current flowing through a wire. For the sake of the example, assume the wire of infinite length. Now, the magnetic field at any point radial to ...
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Why is the direction of polarization of EM wave is the direction of Electric field?
The direction of polarization of a transverse wave is defined to be the direction perpendicular to the direction of propagation of wave or the direction of oscillation of wave, right? But in the case ...
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Why is there a cross product in Biot-Savart law?
In middle school, we are told about the right hand thumb rule which helps us determine the direction of the magnetic field around a current carrying wire.
In high school, we are taught the Biot-...
user243267
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For what reasons of symmetry does the magnetic field inside an infinite solenoid not have an azimuthal component?
When deriving the magnetic field inside of an infinitely long solenoid carrying a stationary current, it's useful to take into consideration the symmetries of the problem, in order to understand which ...
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What is magnetic flux?
I have so far derived the link between special relativity in a straight wire with a current and the Biot-Savart law. Here's my problem. All this is based on the fact that the magnetic field for some ...
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Is equipotential surface of an electric field actually a magnetic field?
Regarding linearly polarized electric fields that are produced by a dipole antenna and electric fields from a current carrying wire, are the equipotential surface the same as the magnetic fields? ...
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How does QED explain the circular magnetic field around a straight conductor?
Since Maxwell's equations are phenomenological, I'm looking for the actual deep reason why the magnetic field is oriented circularly around a straight conductor.
Could anybody knowledgeable on quantum ...
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Isn't linearly polarised light actually chiral or am I stupid?
Isn't linearly polarised light actually chiral when taking the magnetic field into account?
Just looking at the electric field is just 2D and therefore achiral, obviously.
But with the magnetic field ...
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Besides the curl is there any other difference between an electric flux line and a magnetic flux line?
As far as I know, both types of flux mediating the electromagnetic phenomenon and related forces consist of coherent streams of virtual photons according to the known theory.
Besides the total non-...
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