基于亥姆霍兹线圈的电磁感应实验仪设计制作与教学示例

Design and Teaching Example of Electromagnetic Induction Experiment Instrument Based on Helmholtz Coil

基于亥姆霍兹线圈提供匀强磁场,研制出一种既能定性演示电磁感应现象,又能半定量探究电磁感应定律的实验仪.实验仪的设计涉及电生磁、磁场叠加、磁生电、能量转化等基本物理原理的综合应用.仪器设计有明显的创新点,富有趣味性和启发性,实验现象明显,操作方便且成功率高,在中学物理教学中有很好的推广价值.

Based on the uniform magnetic field provided by Helmhertz coil,an experimental instrument is developed which can not only demonstrate the phenomenon of electromagnetic induction qualitatively,but also explore the law of electromagnetic induction semi-quantitatively.The design of the experimental instrument involves the comprehensive application of basic physical principles such as electrogenesis,magnetic field superposition,magnetic generation and electricity,and energy transformation.The instrument design has obvious innovative points,interesting and inspiring,experimental phenomenon is obvious,easy to operate and the success rate is high,so it has a good promotion value in middle school physics teaching.