Ampere's Law

Definition

Ampere's Law is a fundamental principle in electromagnetism that relates the magnetic field around a closed loop to the electric current passing through the loop. It states that the line integral of the magnetic field along a closed path is equal to μ₀ times the total current passing through any surface bounded by that path.

Related terms

Ampere-Maxwell Law: This law extends Ampere's Law by including an additional term called displacement current, which accounts for changing electric fields. It relates the circulation of magnetic field to both conduction currents and displacement currents.

Charge density: Charge density refers to how much charge is present per unit volume or unit area. It can be used in Ampere's Law to calculate the total current passing through a surface.

Magnetic Field: The magnetic field is a region around a magnet or moving charges where magnetic forces can be detected. In Ampere's Law, it is related to the line integral along a closed loop.