北京大学：《电磁学》课程教学资源（PPT课件）第四章 电磁介质——导体、电磁介质界面上的边界

北京大学：《电磁学》课程教学资源（习题讲义）第四章 电磁介质——讨论题

Appendix B Useful identities Algebraic identities for vectors and dyadics A + B = B + A (B.1) A · B = B · A (B.2)

Appendix D Coordinate systems Rectangular coordinate system Coordinate variables

1.1 Notation, conventions, and symbology Any book that covers a broad range of topics will likely harbor some problems with notation and symbology. This results from having the same symbol used in different areas to represent different quantities, and also from having too many quantities to represent

The static electromagnetic field 3.1 Static fields and steady currents Perhaps the most carefully studied area of electromagnetics is that in which the fields are time-invariant. This area, known generally as statics, offers (1)the most direct op￾portunities for solution of the governing equations, and (2)the clearest physical pictures

5.1 Spatial symmetry decompositions Spatial symmetry can often be exploited to solve electromagnetics problems. For analytic solutions, symmetry can be used to reduce the number of boundary conditions that must be applied. For computer solutions the storage requirements can be reduced

[1] Abramowitz, M., and Stegun, I., Handbook of Mathematical Functions, Dover Pub￾lications, New York, 1965. [2] Adair, R., Concepts in Physics, Academic Press, New York, 1969. [3] Anderson, J., and Ryon, J., Electromagnetic Radiation in Accelerated Systems, Physical Review, vol. 181, no. 5, pp. 1765–1775, May 1969

研究问题：从基本的静电现象出发，讨论静电场的描写方法和基本规律，进而建立静电场的基本方程式

研究问题：讨论导体中稳恒电流的形成及其规律以及直流电路的计算。电路 的基本规律包含两方面的内容，一方面是组成电路的各种元件（电阻和电源等） 的伏安特性，另一方面是电路整体的规律，即基尔霍夫定律