According to simplifying rule of force system, the force suffered by a coil carrying current in magnetic field, can be summed up to a resultant of magnetic forces and a total moment of magnetic force.
本文从磁能出发分析外磁场作用在任意载流线圈的磁力和磁力矩,从而推证出任意载流线圈在均匀磁场中所受磁力矩公式。