Definition:Magnetic Field Strength

Definition

Magnetic field strength is the measure of the intensity of a magnetic field.

It can be expressed as:

$\mathbf H = \dfrac {\mathbf B} \mu$

where:

$\mathbf B$ is the magnetic flux density

$\mu$ is the permeability of the medium.

It is a vector quantity.

Symbol

The usual symbol used to denote magnetic field strength is $\mathbf H$.

Dimension

Magnetic field strength has the dimension $\mathsf {I L}^{-1}$.

Units

The SI unit for magnetic field strength is given as amperes per metre:

$\mathrm A \, \mathrm m^{-1}$

Also see

• Results about magnetic field strength can be found here.

Sources

• 1921: C.E. Weatherburn: Elementary Vector Analysis ... (previous) ... (next): Chapter $\text I$. Addition and Subtraction of Vectors. Centroids: Definitions: $1$. Scalar and vector quantities
• 1970: George Arfken: Mathematical Methods for Physicists (2nd ed.) ... (previous) ... (next): Introduction: Electromagnetic Theory