法拉第笼
物理
洛伦兹力
电磁感应
背景(考古学)
麦克斯韦方程组
第三定律
法拉第效应
电磁场
磁场
量子电动力学
理论物理学
法学
经典力学
量子力学
电磁线圈
政治学
古生物学
生物
作者
Igal Galili,Dov Kaplan,Yaron Lehavi
摘要
Teaching Faraday’s law of electromagnetic induction in introductory physics courses is challenging. We discuss some inaccuracies in describing a moving conductor in the context of electromagnetic induction. Among them is the use of the ambiguous term “area change” and the unclear relation between Faraday’s law and Maxwell’s equation for the electric field circulation. We advocate the use of an expression for Faraday’s law that shows explicitly the contribution of the time variation of the magnetic field and the action of the Lorentz force, which are usually taught separately. This expression may help students’ understanding of Faraday’s law and lead to improved problem solving skills.
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