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匀强电场中公式E=U/d中的d指与U相对应的两等势面间的垂直距离,即与U对应的沿电场方向两点间的距离。由几何关系可得出如下两条结论:1.匀强电场中,任一直线上电势差与线段长度成正比;2.匀强电场中两点间的电势差不大于电场强度例与1两点间的乘积;如图1所示,平行金属带电极板,AB
In the uniform electric field, d in the formula E=U/d refers to the vertical distance between two equal potential surfaces corresponding to U, that is, the distance between two points along the direction of the electric field corresponding to U. The following two conclusions can be drawn from the geometric relationship: 1. In a uniform electric field, the potential difference on any straight line is proportional to the length of the line segment; 2. The potential difference between two points in a uniform electric field is not greater than the electric field strength between the case and 1 Product, as shown in Figure 1, parallel metal strips, AB