It is pointed out that the self-induction coefficient is relative to the current frequency in the actual conductor circuit, even if there is not any magnetic medium.
指出在无磁介质存在的条件下，实际导体回路的自感系数也与电流频率有关。
2
The current peak phenomenon is usually shown in the electrifying self-induction experiment, but in the present documents, this phenomenon has not been perfectly explained.
通电自感演示实验中存在电流尖锋现象，但始终没有完善的理论解释。
3
The current intensity of variations will produce self-induction when a closed coil moves in magnetic field. Must be attended to the contribution of the current by self-induction to total current.