阿摩線上測驗
8. A conducting sphere is charged up such that the potential on its surface is 100 V (relative to infinity). If the sphere's radius were
twice as large, but the charge on the sphere were the same, what would be the potential on the surface relative to infinity?
(A) 25 V
(B) 50 V
(C) 100 V
(D) 200 V
(E) 400 V
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統計： A(5), B(56), C(2), D(0), E(0) #2356584
統計： A(5), B(56), C(2), D(0), E(0) #2356584
詳解 (共 2 筆)
艾爾
#4744396
V = kQ/r
r變2r V變1/2V
1
0
