Magnetic Fields from Currents

电流产生的磁场

Magnetic fields on a macroscopic scale can be related to electric currents. That relationship is made specific in the Biot-Savart Law and can be visualized and calculated with Ampere's Law if the symmetry of the system is high enough to make the use of Ampere's Law practical.

宏观尺度上的磁场可以与电流相关联。这种关系在毕奥-萨伐尔定律中得到具体说明，并且在系统对称性足够高，使安培定律的使用变得实用的情况下，可以通过安培定律进行可视化和计算。