14.tSee the right figure, there is a metallic sphere, on 的ich a constant electric potential is applied, A chained particle moves fh>m point A to point B through three different kinds of paths denoted as I, II, and III. Through which path does the particle gain the most electric eneigy?

答案:D
統計:A:0,B:0,C:0,D:1,E:0
難度:計算中