[理工] [電磁]-位能及電容

[aacvbn ( 姿勢+)]

Q1: 電位問題
Find the potential on the axis of a uniformly charged

solid cylinder, a distance z  from the center. The

length of the cylinder is L, its radius is R, and the

charge density is ρ. Use your result to calculate the

electric field at this point. (Assume that z > L/2.)


Q2: 電容問題
Determine the capacitance of an isolated conducting

sphere of radius a that is coated with a dielectric

layer of uniform thickness d. The dielectric has an

electric susceptibility (χ_e).


感謝高手的詳細解說~!!



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→ iyenn:哪來的題目呀,@@||
→ QQkimi:別問哪裡來的! 快做XD
推 iyenn:Q大不做嗎ORZ
推 QQkimi:我早餐沒吃沒力氣拿筆XD
→ aacvbn:助教說要拿這些題目來整我們的 我們也很無奈 唉~~~
→ QQkimi:感覺i大以後做助教，也會整人XD  逃...
推 iyenn:http://img137.imageshack.us/img137/2315/46871507.jpg
→ iyenn:2.set +-Q ->D=?->E=?->V=?->C=Q/V END
→ iyenn:真的是折騰人的題目........
推 QQkimi:你看 i大神的跟鬼一樣 m(_ _)m
→ iyenn:你也回太快了吧........
→ iyenn:中間有部份漏寫.漏抄了-x^2  XDD
→ iyenn:在step2右邊代回的時後漏抄了
→ iyenn:又發現最後整理 +寫成- orz
→ QQkimi:神的跟鬼一樣 連debug都超強 m(_ _)m