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]
03.50: A solid uncharged condu xpvvc-c:6ez2l8n -a hxbu *)u2 3qd u+kao7klcting sphere has radius 3a contai 9u fjjf;w)(vmmb4: ylns a hollowed spherical region of radius 2a. A point charge +Q is placed at a position a distance a from the common cente vy9: )ffm(uwm 4j;b ljr of the spheres. What is the magnitude of the electric field at the position r = 4a from the center of the spheres as marked in the figure by P?
A. 0
B. $\frac{3kQ}{16a^{2}}$
C. $\frac{kQ}{9a^{2}}$
D. $\frac{kQ}{16a^{2}}$
E. None of the previous
参考答案: D
本题详细解析:
暂无
| 
