我自己认为,因为导体性质是越弯曲的地方越能聚集电荷,所以连接起来之后,电荷应该从半径大的球流向半径小的球,但答案是反的,我想不出来为什么。
英文原题:答案说是B
Twoconducting spheres, X and Y. have the same positive charge +Q, but different radii (rx > ry) as shown above. The spheres are separated so thatthe distance between them is large compared with either radius. If a wire is connected between them, in whichdirection will current be directed in the wire?
(A) From X to Y (B) From Y to X
(C)There will be no current in the wire.
(D) It cannot be determined withoutknowing the magnitude of Q.
(E) It cannot be determined withoutknowing whether the spheres are solid or hollow.