試題詳解

40. Two conducting spheres, of radii R₁ = 0.2 m and R₂ = 0.1 m, carry charges q₁ = 6 x10^-8 C, q₂ = -2 x10^-8 C and are placed at a distance>> R₁, R₂ from cach other. They are then connected by a conducting wire. What are their final charges (q₁', q₂')?
(A) 1.85✖10^-8 C, 2.15 ✖10^-8C
(B) 2.67✖10^-8 C, 1.33✖10^-8C
(C) 2.33 ✖10^-8 C, 1.67 ✖10^-8C
(D) 2.15✖10^-8 C, 1.85✖10^-8C
(E) 1.33 ✖10^-8 C, 2.67 ✖10^-8C