本题目来源于试卷: Gauss Law and Metal in Eclectic Equilibrium，类别为 美国物理杯赛(Physics Bowl)
[单选题]
17.46 Two copper spheres X and Y, with di, u5 xn0fy,h)r* h gjovn2ga(ku.n v.a+4u 4skeakuen4 1hgq,fferent radii ($R_x>R_y$) and equal excess charge +Q, are placed apart from each other. A scientist using insulating gloves connects the spheres with a copper wire. Which one of the following choices best describes what happens after the connection is made?
A. There is a net movement of electrons from sphere Y to sphere X until the electric field just outside the surface of each sphere has the same magnitude.
B. There is a net movement of electrons from sphere Y to sphere X until the electric potential just outside the surface of each sphere has the same magnitude.
C. There is a net movement of electrons from sphere X to sphere Y until the electric field just outside the surface of each sphere has the same magnitude.
D. There is a net movement of electrons from sphere X to sphere Y until the electric potential just outside the surface of each sphere has the same magnitude.
E. There is no net movement of electrons from one sphere to the other because the spheres already have equal charge.
参考答案: D
本题详细解析:
暂无
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