試題詳解

36. A nonconducting sphere of radius 10 cm is uniformly charged with a density of 100 nC/m³. What is the potential difference between the center and a point 4.0 cm away?
(A)1.0 V
(B)3.0 V
(C)12.0 V
(D)24.0 V
(E)36.0 V