基于DISlab的自感现象演示实验研究

Study of self-induction demonstration experiment based on the DISlab

在中学物理教学中,传统的自感现象演示实验只能进行定性研究,利用DISlab进行自感现象演示实验研究,实现了定性及定量研究.通过实验电路的改进,进一步增强实验的演示效果.在实验过程中发现了一些特殊的实验现象并对此进行相应的思考.如在通电后,在灯泡电压达到稳定前出现了一个峰值;当改变电源极性重复操作实验时,弛豫时间变长等.

The traditional self-induction phenomenon demonstration experiment can only be studied qualitatively in high school physics teaching.Carrying out the traditional self-induction phenomenon demonstration experiment study with DISlab can achieve a qualitative and quantitative research.Through the experiment circuit improvement,the effect of experimental demonstration is further enhanced.During the experiment,we find some special phenomena and thinking them deeply.As in the current,a peak is appeared before the voltage stability in the light bulb,and when changing the polarity to repeat the experiment,the relaxation time becomes long,etc.