Definition - What does Magnetic Field mean?
A Magnetic Field is a field or effect created by magnetic materials and electric currents. A Magnetic Field has a magnitude and a direction. The Magnetic Field produced by the electric current can either be microscopic or macroscopic current. The symbols B and H are used to denote the Magnetic Field. B stands for Magnetic Field, magnetic flux density and magnetic induction. Whereas, H stands for Magnetic Field, magnetizing field, magnetic field intensity and magnetic field strength. Permanent magnets can also create Magnetic Fields in which the magnet attracts the ferromagnetic materials such as iron.
Petropedia explains Magnetic Field
Magnetic Fields are produced by magnetic objects or from the electric currents produced by a device. A Magnetic Field has strength, which is also known as magnitude, as well as direction. A Magnetic Field can be denoted by B and H, where B is according to the Lorentz force law and Tesla's symbol T, and H is amperes per meter. The earth also has a Magnetic Field, which is known as geomagnetic field that starts from the interior of the earth up to the solar wind. Magnetic Field can be measured in Tesla, T which is a SI unit for Magnetic Field.