### Electromagnetics

Course Code: B21003Y-A01

Course Name: Electromagnetics

Credits: 4.0

Lecture Time: 36 sessions, 2 hours/session

Course Description

This course enables students to grasp the basic phenomenon of electromagnetic movement, basic concepts and basic laws, and learn to analyze and solve the basic problems of electromagnetism. By discussing the process of the establishment of the theory of electromagnetism, the basic paradigm of the physical researchwill be presented.
The arrangement of the teaching content will be rich to stimulate students to think deeply, and to letsecondary students understand the lecture. While explaining the principles of electromagnetism, it is also a concise representation of the development of the electromagnetics from its birth to the present time. It also discusses the physical principles and deep philosophical thoughts in the electromagnetic phenomena. Through the discussion of electromagnetic phenomena, students will gain a good foundation of electromagnetics, have a deeper understanding of the essence of physical phenomena and universality, adapt to the transition from high school to university, and have a good foundation and preparation for future development.

Topics and Schedule

0. Introduction
The curriculum requirements, development and history of electromagnetics in modern physics position;

1. Electrostatic Field

1.1 Coulomb law

1.2 Electric field, electric field strength, Superposition principle of field

1.3 Gauss theorem of electrostatic field

1.4 Loop theorem and electric potential of electrostatic field

1.5 Electrostatic energy of charged bodies

2. Conductor and Dielectric in Electrostatic Field

2.1 Conductor in electrostatic field
2.2 Capacitance and capacitor
2.3 Polarization in dielectric
2.4 Energy and energy density of electric field

3.1 Constant condition of continuity equation of current
3.2 Ohm's law
3.3 Power and electromotive force
3.4 Simple circuit and complex circuit

3.5 Thermoelectric phenomenon
3.6 Electron emission and gas conduction

4.1 Basic phenomena and laws of magnetism
4.2 Boit-Savart law

4.3 "Gauss theorem" and "Ampere circuit law" of magnetic field

4.4 Ampere law
4.5 Lorentz force

5. Electromagnetic Induction and Transient Process

5.1 Electromagnetic induction law
5.2 Electromotive force induced vortex electric field
5.3 Self-induction and Mutual Induction
5.4 Transient process

6. Magnetic Medium

6.1 The source of the magnetic material, the molecular current viewpoint
6.2 The source of the magnetic material, the magnetic charge viewpoint
6.3 Magnetization of the medium, paramagnetic, diamagnetism, and ferromagnetic

6.4 Boundary condition, magnetic circuit theorem
6.5 Energy and energy density of magnetic field

7. Alternating Current
7.1 Review of alternating currents
7.2 Elements in AC circuit
7.3 Series connection and parallel connection of elements (vector graph solution)
7.4 Complex number method of AC circuit
7.5 Power of AC
7.6 The significance of resonance circuit and Q value
7.7 Transformer principle

7.8 Three phase AC circuit

8. Maxwell Electromagnetic Field Theory
8.1 Historical review

8.2 Maxwell electromagnetic theory and Maxwell equations
8.3 Hertz experiment of electromagnetic wave

8.4 Energy flow density of electromagnetic field;

9. Selection Lecture of Electromagnetics Application

9.1 Electricity in the atmosphere
9.2 Magnetic field of the earth and celestial bodies

9.3 Electromagnetic phenomena in biology and medicine

9.4 Wireless power transmission technology

Closed-book written examination

Midterm: 2 class hours;

Final test: 2 class hours;

Assessment method: homework 10%, midterm test 30-40%, final test 50-60%.

Textbook

Kai-Hua Zhao, Xi-Mou Chen, Electromagnetics, Third Edition, Higher Education Press

References

[1] Feynman, the Feynman Lectures on Physics, Vol 2, Shanghai Science and Technology Press;

[2] E. M. Purcell, Electricity and Magnetism, (Berkeley Physics Course, In SI units), English version, Vol 2, Mechanical Industry Press;

[3] Bing-Qian Chen, You-Sheng Shu, Wang-Yu Hu, Special Topics in Electromagnetism, Higher Education Press, (Teachers' reference book).