作者wamos (豆腐普洱湯)
看板Physics
標題[題目]普物一題
時間Sun Mar 28 02:51:50 2010
[領域] 普物
[來源] BENSON
[題目]
A nonconducting infinite plate has a surface charge density
σ on each face. It is placeed parallel to a similar plate with
-σ on each face. What is the field (a)in the region between the
plates?(b)within the positive plate?
我的答案是
σ σ
(a) -------- (b)--------
εo 2εo
可是解答給
2σ σ
(a)------- (b)-------
εo εo
滿奇怪的阿!!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.114.220.45
1F：→ chungweitw:兩側都 sigma, 不就 2 sigma? 不怪 03/28 02:56
2F：→ wamos:可以解釋一下嗎 ? 03/28 13:56
3F：推 Mpegwmvavi:注意看題目寫的,他的帶電面有兩面,並不是無窮薄的帶電 03/28 14:38
4F：→ Mpegwmvavi:板,所以你可以看做有四層無窮帶電板 03/28 14:39
5F：→ wamos:謝M大 我懂了!! 03/28 15:41