問題詳情
17. In a certain region, the electric potential due to a charge distribution is given by the equation V(x.y) = 2xy - x2 - y, where x and y are measured in meters and V is in volts. At which point is the electric field equal to zero?
(A) x=0.5 m,y=0.5 m
(B) x=0m,y=0m
(C) x=1m,y=1m
(D) x=0.5 m,y=1 m
(E) x=1m,y=0.5m
參考答案
答案：A
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中