CAJ | 학술논문

稳恒情形电磁场的能量属于势能,来源于建立电荷电流系统的过程中外界提供的能量,根据建立电荷电流系统过程的功能关系,可以推导出场能量的计算公式;另一方面,稳恒情形电磁场是电磁场的一种特殊情形,根据经典电动力学的理论基础———麦克斯韦方程组和洛仑兹力公式,也可以得到稳恒情形电磁场能量公式。两种方法得到的能量公式,无论形式还是适用范围都应该一致,文章就这个问题及不同形式公式中各物理量的含义进行了讨论。
은항정형전자장적능량속우세능,래원우건립전하전류계통적과정중외계제공적능량,근거건립전하전류계통과정적공능관계,가이추도출장능량적계산공식;령일방면,은항정형전자장시전자장적일충특수정형,근거경전전동역학적이론기출———맥극사위방정조화락륜자력공식,야가이득도은항정형전자장능량공식。량충방법득도적능량공식,무론형식환시괄용범위도응해일치,문장취저개문제급불동형식공식중각물리량적함의진행료토론。
Energy in stable electromagnetic field belongs to potential energy. It is acquired from the energy provided by the environment in the course of establishing charge current system. On the basis of the relationship between work and energy during the course, the e- quation of this kind of field energy can be deduced. Stable electromagnetic field, on the other hand, is a special electromagnetic field as well. Based on Maxwell equations and Lorenz force formula, the equation of stable electromagnetic field energy can also be deduced. Therefore, two methods are used to deduce the energy equation in stable electromagnetic field. And the forms and the application spheres of the energy equations deduced by these two methods can be identical. This question, and also the meaning of physical quantity in the different forms of these equations are discussed in this article.