Author(s)

José-Luis Jiménez-Ramírez^1*, Ignacio Campos-Flores¹, José-Antonio-Eduardo Roa-Neri²

¹Departamento de Física, Facultad de Ciencias, Universidad Nacional Autónoma de México, CDMX, México.
²área de Física Teórica y Materia Condensada, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana Unidad Azcapotzalco, México D. F., México.

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.

Polarizable Electric and Magnetic Media, Electric and Magnetic Pressures, Electromagnetic Force Densities, Macroscopic Maxwell Equations, Balance Equations of Electromagnetic Momentum

Jiménez-Ramírez, J. , Campos-Flores, I. and Roa-Neri, J. (2019) Electrostatic and Magnetostatic Forces That Arise from Electrostatic and Magnetostatic Pressures. Journal of Electromagnetic Analysis and Applications, 11, 25-40. doi: 10.4236/jemaa.2019.113003.