they exist somewhere in this world or in space . They just float.
An electric field can exist even without the presence of a magnetic field. An example of this is a stationary electric field.
Field mice exist in every state in the union.
A static magnetic field can exist in a good conductor. When the conductor carries current, it produces the flux which can exist inside the conductor. Due to this flux, magnetic field and intensity at a point inside the good conductor.
Any link exist.
a magnetic field
green field project is the projects that already exist but require expansion
Yes, usually. The lines are simply shown to illustrate direction and strength of the field.
6 and 7
Magnetic field
an electromagnetic field is the region where the elctro megnetic forces exist
It can, and it does. There's no connection between the two.
The dogers moved from Brooklyn to Los Angelas after the 1957 season. So there was no need for Ebbets field.