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一、物理原理物理原理如图1所示,它是电磁力补偿天平的基础,在图中有一条导线放置在永久磁铁的两个磁极之间。如果由电源 B 产生一电流I,使它通过导线,那么,按照电磁力右手定则将产生力 F,此力使导线沿图上所示方向向磁铁的气隙外面运动。只要磁场和磁场中的导线的长度保持不变,那么电流 I 及其所产生的力 F 之间成严格的
First, the physical principle The physical principle shown in Figure 1, it is the basis of electromagnetic force compensation balance, in the figure there is a wire placed between the two permanent magnets. If current I is generated by power supply B and passed through the wire, a force F will be generated in accordance with the right-hand rule of electromagnetic force, which causes the wire to move out of the air gap of the magnet in the direction shown. As long as the lengths of the wires in the magnetic and magnetic fields remain constant, the current I and the force F it generates become strictly