Magnetic field of a wire

If electricity flows through an electrical conductor, the following can be observed:
Magnetic needles are deflected.
If you follow the north pole of the compass needles, you can see the course of the magnetic field lines.
The magnetic field lines indicate how the magnetic force works.
The lines are circular and surround the entire wire.
If the current flows in the other direction, the magnetic field is also turned the other way.
Perpendicular to the conductor, the magnetic field is the same everywhere.
If you move the conductor, the magnetic field moves with it.