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教科书在推导出电荷q在电场中从A点移到B过程中，电场力所作的功和电势差的关系WAB=qUAB之后得出下面两个结论：结论1：沿电场线方向，电势逐点降低；结论2：电场力作正功时，正电荷是从电势高的地方移向电势低的地方；负电行是从电势低的地方移向电势高的地方．反之，只要正、
The textbook deduces that the charge q moves from point A to B in the electric field. The relationship between the work done by the electric force and the potential difference WAB=qUAB yields the following two conclusions: Conclusion 1: The potential decreases point by point along the direction of the electric field lines. ;Conclusion 2: When the electric field is working positively, the positive charge is moved from a place where the electric potential is high to a place where the electric potential is low; and the negative electric house is moved from a place where the electric potential is low to a place where the electric potential is high. Conversely, as long as it is