讲完电容器接法以后,教师往往举这样一道习题让学生解答:由许多相同的金属片和电介质片相间迭置而成的电容器,金属片彼此平行放置,间隔距离相等。设金属片数目是n,表面积是S,间距是d,介质的介电系数是ε。如果将所有奇数金属片连接在一起,所有偶数金属片连接在一起,求其电容量(图1)。 After the capacitor connection method is finished, the teacher often asks the students to answer the question: A capacitor made up of a number of identical metal sheets and dielectric sheets stacked on top of each other, and the metal sheets are placed parallel to each other at equal intervals. Let the number of metal pieces be n, the surface area be S, the distance be d, and the dielectric coefficient of the medium be ε. If all the odd-numbered metal pieces are connected together, all even-numbered metal pieces are connected together to find their capacitance (Figure 1).