What is the danger if your hair suddenly stands up?

Presentation on theme: "What is the danger if your hair suddenly stands up?"— Presentation transcript:

1 What is the danger if your hair suddenly stands up?
9 電磁 II What is the danger if your hair suddenly stands up?

2 本單元內容 9-1電位與電容器 9-2電流與電阻 9-3電路

3 9-1.1 電位能 Fe and Fg are mathematically identical
Fe is a conservative force

4 9-1.2 電位 Ue depends on q, but Ve does not

5 9-1.2 等位面 Four Equipotential Surfaces

6 9-1.3 等位面3例 E.S. for a uniform field, a point charge, and an electric dipole

7 9-1.4 由電場算電位 The differential work done by F

8 Ex. 1 均勻電場 (a) Along path (a)

9 Ex. 1 均勻電場︰路徑(a)

10 Ex. 1 均勻電場︰路徑(b)

11 9-1.5 點電荷的電位

12 點電荷的電位

13 點電荷的電位圖

14 9-1.6 一組點電荷的電位 The principle of superposition

15 Ex.2 12 electrons on a circle on an arc 

16 9-1.7 電雙極的電位

17 雙極矩 p = qd

18 Induced Dipole Moment

19 9-1.8 連續電荷分佈的電位

20 Line of Charge

21 計算

22 Charged Disk

23 計算

24 9-1.9 由電位算電場 The work done by the electric field

25 Ex.3 The charged disk

26 9-1.10一組點電荷的電位能 For charges q1 and q2 SP25-8 Three charges

27 Ex.4 An alpha particle and a gold nucleus

28 9-1.11 Potential of a charged isolated conductor
導體內部及表面為一等位面(equipotentail surface)

29 Discharge

30 Plots of E (r) and V(r)

31 敬請期待 電容器、電流與電阻