1

x+ll

y

2

電磁學(一)

Text Book:Elements of Engineering Electromagnetics, 6/e by Nannapaneni Narayana RaoReference Book:Field and Wave Electromagnetics, 2/e by David K. Cheng

Chapter 1 Vectors and FieldsChapter 2 Maxwell’s Equations in Integral FormChapter 3 Maxwell’s Equations in Differential Form, and Uniform

Plane Waves in Free SpaceChapter 4 Fields and Waves in Material MediaChapter 5 Electromagnetic Potentials and Topics for Circuits and Systems

3

評分標準

• Homework: 15%– 一律用A4紙書寫，並裝訂好。遲交的作業：一周內補交成績以80%

採計，隔周起補交打對折。

• 期中考: 35%• 期末考: 35%• 隨堂小考、出席狀況: 15% • 教材密碼:上課公布• E-mail: ycchiang1970@nchu.edu.tw• 個人網頁: http://web.nchu.edu.tw/~ycchiang/ (或由系網頁連)• 實驗室網頁: http://web.ee.nchu.edu.tw/~rfem

4

作業、考試書寫規定

• 課本印刷體 作業、考試書寫格式• 純量(scalar): V V• 向量(vector): E• 單位向量: ax• 純量相量(phasor): • 向量相量: • Cartesian座標: (x, y, z) : (x, y, z)• Cartesian向量: axA1 + ayA2 + azA3• Cylindrical座標: (r, , z); arc (r, , z); • Spherical座標: (r, , ); ars (R, , );

E

xa

V VE E

1 2 3x y ya A a A a A

ra

Ra

5

Introduction

• Electromagnetics (simple statement)– The study of the effects of electric charges at rest and in motion.

• Sources: positive and negative chargescurrent (moving charges)

• A field is a spatial distribution of a quantity, which may or may not be a function of time.– Ex: gravitational field.

2

1 22

Mathematical form:

, ,, ,

( , , ), ,

g

e

GMmF x y zR x y z

kQ QF x y zR x y z

6

Introduction

7

Introduction

8

Introduction

Grid

9

Introduction

10

Introduction

11

Introduction

• 相關課程

物理學

電磁學

工程數學

電路學

微電子學

電機機械

微波通訊

光學

12

Introduction

Quasi-static situation:electromagnetic problem

circuit problem

Lumped

DC

AC

EM

13

SI Units and Universal Constants

afpn

mcddahkMGTPE

Symbol

attofemtopiconanomicromillicentidecidekahectokilomegagigaterapetaexaPrefix

10001 000 000 000 000 000.010001 000 000 000 000.010001 000 000 000.010001 000 000.010001 000.010001.0100.01100.110101010010000 110000 000 110000 000 000 110000 000 000 000 110000 000 000 000 000 110000 000 000 000 000 000 1

Multiplied Is Unit by Which Factor

18

15

12

9

6

3

2

1

1

2

3

6

9

12

15

18

†

†

†

†

14

Additional Resources

• 均一教育平台(高中物理)• https://www.junyiacademy.org/junyi-science/junyi-physics

– 電與磁的統一 (基礎)– 靜電學 (高三)– etc.

• 中興大學微積分E計畫• http://www.amath.nchu.edu.tw/~tdoc/

–向量、向量積

–向量積分(線性積分、面積分、體積分)

–梯度、散度、旋度、Laplacian算符‧其他開放式課程