气垫导轨上的电磁感应实验  

Electromagnetic induction experiment on the air track

作　　者：李维钧[1] 赵四建[1] 

机构地区：[1]西安理工大学高等技术学院,陕西西安710082

出　　处：《物理实验》2007年第8期28-31,共4页Physics Experimentation

摘　　要：利用滑块带动金属杆切割亥姆霍兹线圈中心区域匀强磁场的磁感应线,可以产生感应电动势.通过实验可以验证感应电动势大小与金属杆运动速度、长度以及磁感应强度之间的关系,也可以验证感应电动势大小和磁通量变化率成正比.Using the slider to drive a metal bar to cut perpendicularly the uniform magnetic field in the center of a Helmhohz coil, induction electromotive force could be produced. Through this experiment the relation between the induction electromotive force and the length and velocity of the metal bar, the magnetic induction is verified. In addition, the proportional relation between the induction electromotive force and the changing rate of the magnetic flux could be verified too.

关 键 词：感应电动势 气垫导轨 亥姆霍兹线圈 

分 类 号：O441.3[理学—电磁学]