井冈山大学学报（自然科学版）
井岡山大學學報（自然科學版）
정강산대학학보（자연과학판）
Journal of Jinggangshan University (Natural Sciences Edition)
2015年
5期
30-32
,共3页
蒋达国%孙心瑗%刘宇安%李久明
蔣達國%孫心瑗%劉宇安%李久明
장체국%손심원%류우안%리구명
感应电动势%磁通量的变化量%磁通量的变化时间%线圈匝数
感應電動勢%磁通量的變化量%磁通量的變化時間%線圈匝數
감응전동세%자통량적변화량%자통량적변화시간%선권잡수
induced electromotive force%variation of magnetic flux%the change time of the magnetic flux%the number of turns of the coil
设计了一种用控制变量法探究法拉第电磁感应定律的实验装置，可以定性和定量地探究感应电动势与磁通量的变化量、磁通量的变化时间和线圈匝数之间的关系。用发光二极管的亮度和电容器的电压来表征感应电动势的大小；用磁铁从线圈中水平抽出的速度和磁铁自由下落的高度来表征磁通量的变化时间；用磁铁的磁感应强度表征磁通量的变化量。
設計瞭一種用控製變量法探究法拉第電磁感應定律的實驗裝置，可以定性和定量地探究感應電動勢與磁通量的變化量、磁通量的變化時間和線圈匝數之間的關繫。用髮光二極管的亮度和電容器的電壓來錶徵感應電動勢的大小；用磁鐵從線圈中水平抽齣的速度和磁鐵自由下落的高度來錶徵磁通量的變化時間；用磁鐵的磁感應彊度錶徵磁通量的變化量。
설계료일충용공제변량법탐구법랍제전자감응정률적실험장치，가이정성화정량지탐구감응전동세여자통량적변화량、자통량적변화시간화선권잡수지간적관계。용발광이겁관적량도화전용기적전압래표정감응전동세적대소；용자철종선권중수평추출적속도화자철자유하락적고도래표정자통량적변화시간；용자철적자감응강도표정자통량적변화량。
An experimental device is designed for exploring Faraday’s law of electromagnetic induction by the method of controlling variables. It can explore the relationship among induced electromotive force, variation of magnetic flux, the change time of the magnetic flux, and the number of turns of the coil, qualitatively and quantitatively. Induced electromotive force is characterized by both the brightness of light emitting diode and the voltage of capacitor. The change time of the magnetic flux is described as both the mean speed when the magnet is drawing out of the coil, and the height of the magnet which is free falling. The variation of magnetic flux is extracted from magnetic induction intensity.
