应用库仑定律,首先要判断是否满足它的适用条件(适用于求真空中两个点电荷之间的相互作用力),其次要善于把力学规律迁移过来,熟练地对带电体进行受力分析、运动分析,选择合适的规律进行计算.利用库仑定律可以解决带电体间的电荷量交换、带电粒子平衡和运动等问题. To apply Coulomb’s law, we must first determine whether it satisfies its applicable conditions (applicable to the interaction between two point charges in vacuum). Second, we must be good at migrating the laws of mechanics and skillfully analyze the charged body. Motion analysis, selecting the appropriate law to calculate. Using Coulomb’s law can solve the charge exchange between charged objects, charged particle balance and movement and other issues.