Linked Questions
12 questions linked to/from Special relativity and electromagnetism
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How do moving charges produce magnetic fields?
I'm tutoring high school students. I've always taught them that:
A charged particle moving without acceleration produces an electric as well as a magnetic field.
It produces an electric field ...
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Do moving charges still generate an electrostatic field?
According to my EM professor, an infinite line of current $I$ creates only a magnetostatic field (the regular $\vec B=(\mu_0 I\vec /2\pi r)\vec e_\varphi$ you get from applying Ampère's law), and not ...
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Current in wire + special relativity = magnetism
Current in wire + moving charge next to wire creates magnetic force in the stationary reference frame OR electric force in the moving reference frame from special relativity due to change in charge ...
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4
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Maxwell's equations without special relativity
If Maxwell's equations were around long before special relativity, and yet they don't make sense without special relativity (like if you think of a moving charge next to an electrically neutral wire ...
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3
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Does special relativity explains working of an electromagnet?
I heard that special relativity could be used to explain the working of electromagnet, but couldn't dig anything out of it. Can somebody give some explanation of the above?
I also heard that it is ...
3
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1
answer
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A positive charge moves towards a wire with positive current. How are the effects of the magnetic field explained upon a Lorentz transformation?
Consider a positive charge $P$ moving towards a wire that has the same density of positive charges and negative charges, but so that the positive charges are moving to the right. Then the magnetic ...
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2
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Why do electrons stretch when they flow through a wire?
In the question: Special relativity and electromagnetism, the question was in reference to a Veritasium video where he describes how magnetic fields are caused by special relativity. He describes how ...
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2
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How does a wire's magnetic field appear as an electric field, when the wire is neutral? [duplicate]
It is well known that electromagnetic force depends on frame.
I was reading a book, it says
If a charge is moving parallel to a current carrying wire then a magnetic force will be exerted on ...
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1
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How is velocity measured in magnetism?
In magnetism, we can apply two basic equations which for the most part, explain the forces on currents in wires, namely $ F=qB \times{v}$ and $B = \frac{\mu_0 I}{2\pi r}\hat{r}\times\hat{v}$.
The ...
user86425
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2
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Special relativity and electromagnetic fields
I am an amateur reading the book "The Theoretical Minimum: Special Relativity and Classical Field Theory" by Leonard Susskind. In the lecture about Maxwell's equations,an example similar to the ...
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4
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1
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Magnetism through Relativity
If relativity tells that from a moving charge's frame (observing current carrying wire) protons contract in length and its charge density increases making the charge experience a electrostatic force. ...
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Energy issue in length contraction
Thanks to those who answered my question here Length contraction in special relativity but there is an issue I think that might arise from a uniform contraction that may affect the energy between two ...
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