Question

choose the correct answer. what is the best definition of a magnetic field? a magnetic field is groups of atoms that are lined up inside a magnet. a magnetic field is a region of magnetic force around a magnet. a magnetic field is the increase and decrease in temperature caused by magnetic materials.

Explanation:

A magnetic field is the area around a magnet where magnetic - force can be detected. Atoms lined up inside a magnet are related to the magnet's internal structure, not the definition of the magnetic field. And a magnetic field has nothing to do with temperature changes caused by magnetic materials.

Answer:

B. A magnetic field is a region of magnetic force around a magnet.