Linked Questions

2 votes
1 answer
150 views

Special Relativity and current in wire [duplicate]

If I am a stationary observer and the electrons are moving relative to me,then shouldn't its density increase according to special relativity and thereby create an altogether negative net charge.
sushranth's user avatar
21 votes
4 answers
4k views

Special relativity and electromagnetism

This Veritasium video explains how electromagnets can be explained by special relativity, and how the magnetic field surrounding a current-carrying wire can also be viewed as an electric field, if ...
Phil Frost's user avatar
  • 4,211
5 votes
3 answers
3k views

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 ...
Lagrangiano's user avatar
  • 1,880
6 votes
3 answers
2k views

Why don't stationary charge feel force from a current carrying wire?

The current carrying wire doesn't apply any magnetic force on nearby charge $q$( positive stationary charge) because it has 0 velocity in lab frame. We found that there is no force on q by wire. But ...
James Webb's user avatar
3 votes
3 answers
1k views

Does a current originates a magnetic force against itself?

If electric current creates a magnetic field, and if magnetic field exerts a force in charged particles in movement, is that correct that when a current (in a coil, or something) creates magnetic ...
Vitor Aguiar's user avatar
1 vote
2 answers
493 views

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 ...
Himanshu Tyagi's user avatar
1 vote
0 answers
508 views

Non-zero charge density due to Lorentz contraction in current carrying wires

In trying to answer this question I came across the following problem. The original question relates to the idea that what looks like a magnetic field in one reference frame, ends up as an ...
Dave's user avatar
  • 4,193
3 votes
2 answers
238 views

Confusion over the electric field produced by an infinite, neutral, and current-carrying wire

I have a lot of trouble in attempting to understand several aspects of the relativistic explanation of the magnetic field produced by electric currents. To be more specific, my problem is not in the ...
user2554's user avatar
  • 485
1 vote
0 answers
288 views

Why a moving charge + wire with current in a stationary reference has no electric force?

I've saw the Current in Wire special relativity magnetism question, but the answer did not convince me at all. My doubt is crystal clear. I know the electrons move in a very high velocity in all ...
Paulo Buchsbaum's user avatar
0 votes
1 answer
134 views

Acting force in moving frame of reference

A charged particle moving parallel to a current carrying wire with some constant velocity. Now the frame of reference is also moving with same constant velocity as that of the particle. In my book it'...
user30561's user avatar
  • 147
0 votes
0 answers
82 views

Why does an electrical current have no effect on a stationary charge

According to special relativity, a stationiary observer would observe a moving object as being shorter. So a moving current in a wire would appear to have a more dense amount of electrons for a ...
Benjamin Smus's user avatar
1 vote
1 answer
122 views

Force felt by a moving charge in a reference frame

current in wire + special relativity = magnetism I have almost this same question but i am confused in a particular case. Suppose the wire was neutral at the beginning and the charge was also at rest....
Rishabh Jain's user avatar
  • 1,246