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Some Student Conceptions of Electromagnetic Induction

机译:学生对电磁感应的一些构想

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Introductory electromagnetism is a central part of undergraduate physics. Although there has been some research into student conceptions of electromagnetism, studies have been sparse and separated. This study sought to explore second year physics students’ conceptions of electromagnetism, to investigate to what extent the results from the present study are similar to these results from other studies, and to uncover any new forms of alternative conceptions. Data for this study came from 15 in-depth interviews. Three previously unreported alternative conceptions were identified in the study: 1) induced current varies proportionately with current in solenoid; 2) there must be contact between magnetic flux and the external coil in order for any emf to be induced in the coil; 3) coulombic or electrostatic potential difference is present in an induced electric field. These alternative conceptions were manifested in these students’ explanations of electromagnetic phenomena presented to them during the interviews.
机译:电磁学是本科物理学的核心部分。尽管已经对学生的电磁学概念进行了一些研究,但研究却是稀疏的和分开的。这项研究旨在探索物理专业二年级学生的电磁学概念,以调查本研究的结果与其他研究的结果在多大程度上相似,并发现任何新形式的替代概念。这项研究的数据来自15次深度访谈。研究中确定了三个以前未报告的替代概念:1)感应电流与螺线管中的电流成比例地变化; 2)磁通量和外部线圈之间必须有接触,以便在线圈中感应出任何电动势; 3)感应电场中存在库仑或静电势差。这些替代概念体现在这些学生对面试过程中向他们介绍的电磁现象的解释中。

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