Does a current carrying wire produce electric field outside?
Top best answers to the question «Does a current carrying wire produce electric field outside»
- Yes there is an electric field outside of a current carrying wire, in a direction along the wire axis (i.e. parallel to the wire). This is true in both the AC and DC case. There is also of course a magnetic field in the azimuthal direction.
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However, the released electron itself is negatively ionised, which in turn creates a negative radial electric field permeating within and outside of the current carrying wire. The combined electrostatic field created both inside and outside of the wire has potentially neutralising positive and a negative components.
so current carrying wire doesn’t produce electric field because wire is basically neutral (balanced)…the charges which are responsible for current is flowing. but , if anyhow you can make the wire +ve charged and it remains in this stayed for a duration…then it will produce electric field. 13.7K views. ·.
As your second link states, any real wire will have a certain resistance. This means that the potential drops as you move along the wire, and this will give rise to a parallel electric field, as well! So yes, a current carrying wire will produce a parallel component of electric field as well!
Many theorists believe that there can’t be any Electric Field outside a current carrying wire and their main argument is based on the assumption that the wire is neutral electrically. Although the wire has no net charge as a whole, the charge density on the surface is not constant (in fact it varies linearly along the wire)!
The electric field inside a current carrying conductor is zero be because the charges are distributed on the surface of the conductor. But, magnetic field is created around the current carrying conductor. The moving charges create a magnetic field around the conductor.
A magnetic field produced by an electric current traveling thru a straight cable will take a circular shape around the cable. A magnet, on the other hand, is a dipole, and produces a magnetic field that starts at the north pole, curves down and ends at the south pole.