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一、自感现象的四个要点和三个状态要点一:电感线圈产生感应电动势的原因是通过线圈本身的电流变化引起穿过线圈自身的磁通量变化.要点二:自感电流总是阻碍导体中原电流的变化.当自感电流是由于原电流的增强引起的(如通电)时,自感电流的方向与原电流方向相反;当自感电流是由于原电流的减少引起的(如断电)时,自感电流的方向与原电流方向相同.
First, the self-inductance phenomenon of the four main points and three states A point: Inductance coil produces induced electromotive force is due to the coil itself through the coil current changes caused by changes in magnetic flux. Two points: self-inductance current always hinder the conductor of the original When the self-inductance current is caused by the enhancement of the primary current (such as power on), the direction of the self-inductance current is opposite to the direction of the primary current. When the self-inductance current is caused by the reduction of the primary current (such as power off) When the self-inductance current direction and the same direction of the original current.