The Waves The Wave Equations Electromagnetic Spectrum Poynting Vector S wave on a stretched string See Fig 20-1

Stationary Electric Charges Coulomb's Law Electric Field Intensity E Superposition and Extented Charge Distribution Electric Potential Electric Dipole

The Total Current Density J The curl of b Maxwells equations Maxwell's equations in Integral Form

Magnetization M The Equivalent Surface Current Density The Equivalent Volume Current Denisity Calculation of Magnetic Fields in Material Magnetic Field Intensity Ampere's Circuit Law Magnetic Susceptibility, Permeability Magnetization Curve Hysterisis

Forces on a Wire Carrying a Current in a Magnetic Field Magnetic Pressure Magnetic Energy Denisity Magnetic Forces btwn Two Electric Currents Magnetic Forces Within an Isolated Circuit

Mutual Induction M Induced Electriomotance in Terms of Mutual Inductance Self-Inductance L Coefficient of Coupling Transients in RC Circuits

Motional Electromtance Faraday Induction Law for V B Fields Lenz' law Faraday Induction Law for Time- Dependenct B Flux Linkage E in Terms of and A

Experiments show that a charged particle moving in a magnetic field experiences a force F=Q(v×B) Q-the charge of the particle, v-the velocity of the particle(vector), B-the magnetic field. there is also an electric field, the force acting on the particle is F=Q(E+v×B)

Object: to describe the fieds generated by electric charges and currents Mathematical tools A field is a function describing a quantity at all points in space

§4.1 能量——另一个守恒量 §4.2 力的元功·用线积分表示功 §4.3 质点和质点系动能定理 §4.4 保守力与非保守力·势能 §4.5 功能原理和机械能守恒定律 §4.6 对心碰撞·非对心碰撞