The discussion revolves around the behavior of magnetic fields produced by current-carrying conductors, particularly in relation to objects moving at the same speed as the current. Participants explore the implications of relative motion on the measurement of magnetic fields and the role of different reference frames.
Participants express differing views on the relationship between current, speed, and magnetic fields, with no consensus reached on the implications of relative motion or the nature of the magnetic field in specific frames.
There are limitations regarding the assumptions made about reference frames and the definitions of current and speed, which remain unresolved in the discussion.
A current is generally not associated with a speed.donaldparida said:A current carrying conductor produces a magnetic field but what if there is an object which has the same speed as current.
The magnetic field mixes with the electric field under Lorentz transformations. This means (among other things) that observers in relative motion will measure different magnetic fields.donaldparida said:Will there be magnetic field by the current carrying conductor for that object?
When asking that question, you have to specify in what frame you are measuring the magnetic field. I assume you are asking what the magnetic field is in the frame of the object . Then no, there is no magnetic field in that frame (but the electric field in that frame is different from the electric field in other frames).donaldparida said:A current carrying conductor produces a magnetic field but what if there is an object which has the same speed as current. Will there be magnetic field by the current carrying conductor for that object?
I suppose he is referring to the drift speed of the electrons in the conductor.Orodruin said:A current is generally not associated with a speed.