So, we’ve found the potential energy decrease of a single point charge in a uniform electric field.

因此，我们发现了均匀电场中单点电荷的势能降低。

So, we've found the potential energy decrease of a single point charge in a uniform electric field.

所以我们发现电荷的势能降低了 均匀电场中的一个点。

When we place the positive charge between the plates, the uniform electric field generates a constant force on it, in the direction of the negative plate.

当放置在两个板之间时，会产生电场 均匀是朝向负极板的恒定力。

Now, since a capacitor creates a uniform electric field, we can assume the electric force is constant, and that it acts in the direction in which the test charge moves.

由于电容器产生一个均匀的场，我们假设力 电是恒定的，它是测试电荷的运动方向。