The experimental proof of the presence of the electric field outside a current carrying wire can be achieved by measuring the voltage between any two points along the wire. Non zero voltage will be a proof of the existence of the electric field.

2022年4月24日 · Describe the electric field inside the conductor, at the surface of the conductor, and outside the conductor as a result of the unbalanced charge. Describe the distribution of the charge in and on the conductor. Repeat questions 1-3 for the case of a hollow perfectly-conducting spherical shell (with the interior being vacuum).

2020年5月27日 · But what physically ensures the electric field just outside the conductor is equal in magnitude all around the encompassing circle? Charge density can't be uniform across the surface in this case. If originally the total charge of conductor was 0 it will remain 0 after we put the conductor into external field.

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.

If you have a solid conducting sphere (e.g., a metal ball) that has a net charge Q on it, you know all the excess charge lies on the outside of the sphere. Gauss' law tells us that the electric field inside the sphere is zero, and the electric field outside the sphere is the same as the field from a point charge with a net charge of Q.

The electric field is zero inside a conductor. Just outside a conductor, the electric field lines are perpendicular to its surface, ending or beginning on charges on the surface. Any excess charge resides entirely on the surface or surfaces of a conductor.

2010年9月24日 · 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)!

2006年8月27日 · When we calculate electric field due to a charged spherical conductor at a point outside the conductor, by Gauss's law, it is equal to the electric field due to a point charge at the center of sphere, with net charge on the sphere.

2017年8月31日 · Why is it that the electric field lines do not remain perpendicular to the surface of the conductor they're coming from if it is finite? Is this just electrostatic repulsion? Imagine you pick a point to the right off the edge of the disk.

Electric Fields are Perpendicular to Charged Surfaces. A second characteristic of conductors at electrostatic equilibrium is that the electric field upon the surface of the conductor is directed entirely perpendicular to the surface. There cannot be a component of electric field (or electric force) that is parallel to the surface.