[問題] 兩導體球
Two conducting spheres have radii R1 and R2, with R1 greater than R2. If they
are far apart the capacitance is proportional to:
A) R1R2/(R1-R2)
B) R1^2-R2^2
C) (R1-R2)/R1R2
D) R1^2+R2^2
E) none of these
答案給E，詳解寫「可視為兩孤立導體球電容器串聯」，想問一下這兩顆球離很遠為什麼
是串聯....
先謝謝大家
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