GEOLOGY

Detailed explanation-1: -The region surrounding a magnet in which the force of the magnet can be detected is a magnetic field.

Detailed explanation-2: -This region is called the magnetic field. If an iron object is near a magnet, but is not within the magnetic field, the object will not be attracted to the magnet. When the object enters the magnetic field, the force of the magnet acts, and the object is attracted.

Detailed explanation-3: -Magnetic Field is the region around a magnetic material or a moving electric charge within which the force of magnetism acts. A magnetic field is a vector field in the neighbourhood of a magnet, electric current, or changing electric field in which magnetic forces are observable.

Detailed explanation-4: -The magnetic flux density (also called magnetic B field or just magnetic field, usually denoted B) is a vector field. The magnetic B field vector at a given point in space is specified by two properties: Its direction, which is along the orientation of a compass needle.