試題詳解

59. Two conducting spheres with radius r and 3r are separated far-apart. The larger sphere carries charge Q, while the smaller one is neutral. After the two spheres are connected by a conducting wire, what are the charges Q_S and Q_L carried by the smaller sphere and larger sphere, respectively?
(A) Q_S = 15Q/16 andQ_L = Q/16
(B) Q_S = 9Q/10 and Q_L = Q/10
(C) Q_S = Q/10 and Q_L= 9Q/10
(D) Q_S = Q/16 andQ_L= 150/16
(E) Q_S = Q/4 and Q_L= 3Q/4