問題詳情
37. A solid nonconducting sphere of radius R carries a uniform charge density throughout its volume. ial distance r1= R/4 from the center, the electric field has a magnitude E0. magnitude of the electric field at a radial distance r2 = 2R ?
(A) E0/8
(B) E0/4
(C) E0/2
(D)E0
(E)2E0
參考答案
答案：D
統計：A:1,B:0,C:0,D:0,E:0
難度：計算中