Magnetic Fields and Properties

These flashcards cover key vocabulary terms related to magnetic fields and properties as discussed in lecture notes.

Magnetic Flux Density (B)

A measure of the magnetic field in a given area, expressed in webers per square meter (Wb/m²).

Ampère's Law

A fundamental law relating the integrated magnetic field around a closed loop to the electric current passing through the loop.

Current Density (J)

The electric current per unit area of cross-section, measured in amperes per square meter (A/m²).

Magnetization Vector (M)

A vector that represents the density of magnetic dipole moments in a material, indicating its response to an external magnetic field.

Magnetic Susceptibility (χ)

A dimensionless ratio that indicates how much a material will become magnetized in an applied magnetic field.

Diamaagnetic Material

A material that is weakly repelled by a magnetic field and carries no magnetic moment.

Paramagnetic Material

A material that has a small, positive susceptibility to magnetic fields, and whose magnetic dipoles align with the field.

Ferromagnetic Material

A material that exhibits strong magnetic properties and can be permanently magnetized.

Magnetic Hysteresis

The lag between changes in the magnetic field strength and the magnetization of a material.

Boundary Conditions

Conditions that must be satisfied at the interface between two different media, such as a perfect conductor.