What is a magnetic field?
the geographic poles of the earth
the shape, strength, and size of a magnet
an area of magnetic force around a magnet
a street sign to help direct you

The area of magnetic force around a magnet

Explanation:  "A magnetic field is a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials. A charge that is moving parallel to a current of other charges experiences a force perpendicular to its own velocity." *Wikipedia*.

i don't know. if i were you, i would search it up online : d

explanation:

okay now i don't know this but for the pints nothing else to say bye