Electrostatic and Magnetostatic Forces That Arise from Electrostatic and Magnetostatic Pressures

• 作者: Ignacio Campos-Flores José-Antonio-Eduardo Roa-Neri José-Luis Jiménez-Ramírez
• 来源期刊: 电磁分析与应用期刊(英文)
• 学科: 医学
• 关键词: Polarizable ELECTRIC and MAGNETIC Media ELECTRIC and MAGNETIC Pressures ELECTROMAGNETIC Force Densities Macroscopic Maxwell EQUATIONS Balance EQUATIONS of ELECTROMAGNETIC Momentum
• 年，卷（期）: 2019,（3）
• 页码范围: 25-40
• 页数: 16页
• 分类号: R73

摘要

With the insight provided by a balance equation of electromagnetic momentum, we compare the force on a dielectric slab inside a capacitor with the force on a magnetizable rod inside a solenoid. We conclude that these forces are not exactly analogous, as usually thought. We present a device that is a proper analogy of the case of a dielectric slab inside a capacitor. Our analysis shows the significance of the electrostatic and magnetostatic pressures to the understanding of these effects and shows the conceptual differences between both cases.