1.8
The magnetic field produced by a moving charge can be calculated by the Biot-Savart law. Integrating the Biot-Savart law over a current path gives the total magnetic field produced by the entire current path. This technique can be used to determine the magnetic field produced by a current loop, such as a single-turn wire loop or a magnetic moment. Further integration of the magnetic field over the area of the wire loop gives the inductance.