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电流天平是研究磁场对载流导线相互作用特征的仪器。目前采用的电流天平是根据统编教材高中《物理》下册第3—24图而设计的,按其结构只能研究通电螺线管中的磁感应强度,而不能测定永久磁体和通电螺线管周围空间的磁感应强度,无法研究电流方向IL跟磁感应强度的方向成交角时F=BILsinα的特征。
Current balances are instruments that study the interaction characteristics of magnetic fields on current-carrying conductors. Current current balances are designed based on the 3rd to 24th volumes of the textbook “Physics” in the textbook. According to its structure, only the magnetic induction in the energized solenoids can be studied, and permanent magnets and energized solenoids cannot be measured. The magnetic induction intensity of the surrounding space cannot be used to characterize the F=BILsinα when the current direction IL is in the direction of the magnetic induction intensity.