作者y956403 (寻欢)
看板Physics
标题[问题] 两导体球
时间Fri Apr 28 18:11:48 2017
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
答案给E,详解写「可视为两孤立导体球电容器串联」,想问一下这两颗球离很远为什麽
是串联....
先谢谢大家
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1F:→ Vulpix: 无限远处那边连在一起。本来可以直接当成串联,但这边利用 04/29 15:35
2F:→ Vulpix: 两颗球离很远这个事实来近似成孤立导体球电容。 04/29 15:36