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magnetic field strength, the part of the magnetic field in a material that arises from an external current and is not intrinsic to the material itself. It is expressed as the vector H and is measured in units of amperes per metre.
The unit of H, magnetic field strength, is ampere per meter (A/m). [5]: 22 B and H differ in how they take the medium and/or magnetization into account.
29 Απρ 2024 · Magnetic Field Intensity also called Magnetic Field Strength is defined as the ratio of the MMF required for creating a fixed magnetic flux density (B) in a particular material per unit length of that material.
Magnetic field strength is a measure of the intensity of a magnetic field in a given area of that field. Represented as H, magnetic field strength is typically measured in amperes per meter ( A/m ), as defined by the International System of Units ( SI ).
The magnetic field strength ranges from approximately 25 to 65 microteslas (0.25 to 0.65 G; by comparison, a strong refrigerator magnet has a field of about 100 G). The intensity of the field is greatest near the poles and weaker near the equator.
In fact, this is how we define the magnetic field strength \(B\)--in in terms of the force on a charged particle moving in a magnetic field. The SI unit for magnetic field strength \(B\) is called the tesla (T) after the eccentric but brilliant inventor Nikola Tesla (1856–1943).
Learn how to define and distinguish the magnetic field strength H from the magnetic field B in materials with different magnetic responses. Find out the units, formulas and examples of H and B.
