TAILIEUCHUNG - Lecture Physics A2: Electromagnetic Field and Wave - PhD. Pham Tan Thi

Lecture Physics A2: Electromagnetic Field and Wave - PhD. Pham Tan Thi present the content Maxwell’s equation, Gauss’s law for electric field, Faraday’s law, Ampère’s law with Maxwell’s correction, convert intergral form to differential form, . | Electromagnetic Field and Wave Pham Tan Thi . Department of Biomedical Engineering Faculty of Applied Science Ho Chi Minh University of Technology Maxwell s Equation Maxwell discovered that the basic principles of electromagnetism can be expressed in terms of the four equations that now we call Maxwell s equations 1 Gauss s law for electric fields 2 Gauss s law for magnetic fields showing no existence of magnetic monopole. 3 Faraday s law 4 Ampere s law including displacement current Maxwell s Equations Integral form Differential form Gauss I Law Qinside E dS r E quot 0 quot 0 Gauss Law for Magnetism I dS B 0 0 r B Faraday s Law I d B @ B E dl r E dt @t IAmpere s Law d E @ E B dl µ0 Ienclosed µ0 quot 0 µ0 J µ0 quot 0 r B dt @t Macroscopic Scale Microscopic Scale Gauss s Law for Electric Field The flux of the electric field the area integral of the electric field over any closed surface S is equal to the net charge inside the surface S divided by the permittivity ε0. I Qinside E dS quot 0 Qinside E dxdyˆ n n dS ˆ dS n ˆ dxdy quot 0 Qinside E dxdycos quot 0 dx Qinside dS Edxdy dy quot 0 2 Qinside ES E 4 r quot 0 Qinside E Coulomb s Law 4 r2 quot 0 Gauss s Law of Magnetism Gauss s law of magnetism states that the net magnetic flux through any closed surface is zero I dS B 0 The number of magnetic field lines that exit equal to the number for magnetic field lines that enter the closed surface E I Qinside dS E quot 0 Faraday s Law The electric field around a closed loop is equal to the negative of the rate of change of the magnetic flux through the area by the loop. I d l d B d l Edlcos Ed E E dt Edl θ 0 d B E 2 R dt d B dt d B W F d Eqd dt W Ed d V Ed Ampère s Law with Maxwell s Correction The line integral of magnetic field over a closed path is equal to the total current going through any surface bounded by the closed path I d E B dl µ0 Ienclosed µ0 quot 0 dt 1. Time-changing electric fields induces magnetic fields 2. Displacement current .

• Vật lý
• Lecture Physics A2
• Bài giảng Vật lý A2
• Electromagnetic field
• Maxwell’s equation
• Ampère’s law
• Faraday’s law
• Gauss’s Law
• Bài giảng Vật lý đại cương A2
• Vật lý đại cương A2
• Atomic physics
• Hydrogen atom
• Metal atoms
• Angular momentum
• Orbital angular momentum
• Orbital magnetic momentum
• Zeeman effect
• Nuclear physics
• Nuclear components
• Binding energy
• Nuclear force
• Nuclear reactions
• Quantum mechanical atomic theory
• Schrödinger Equation
• Energy degeneracy
• Magnetic resonance imaging
• Nuclear binding energy
• Radioactive decay
• Nuclear models
• Nuclear energy
• Electron diffraction
• Matter wave interference
• Heisenberg uncertainty principle
• Schrödinger equation (SEQ)
• Simple Harmonic Motion
• Physical Pendulum
• Damped Oscillations
• Driven Oscillations
• Mechanical waves
• Sound Wave
• Wave motion
• Electromagnetic radiation
• Electromagnetic fields
• Maxwell’s equations
• Plane electromagnetic waves
• Wave equation
• Optical path length
• Malus’s theorem
• Conditions for interference
• Thin film interference
• Diffraction grating
• X ray diffraction
• Huygens’s principle
• Single slit diffraction
• Quantum optics
• Thermal radiation
• Equilibrium thermal radiation
• Laws of blackbody radiation
• Quantum mechanics
• Heisenberg’s uncertainty principle
• Matter wave
• De Broglie’s hypothesis
• Discrete atomic emission line
• Schrodinger equation
• Tunnel effect
• Classical mechanics
• Elementary particles
• Fundamental fermions
• Fundamental bosons
• Special relativity
• Einstein’s postulates
• Lorentz transformation
• Lorentz velocity transformation
• Equilibrium position
• Angular frequency
• Simple harmonic oscillation
• Oscillation frequency
• Magnetic fields
• Magnetic field lines
• Magnetic force
• Semicircular conductor
• Vector form of torque
• Single oscillating wave
• Inequal intensities
• Superposing sinusoidal waves
• Transparent materials
• Hyugen’s principle
• Weak diffraction
• Fraunhofer diffraction
• Einstein’s special relativity
• Reference frame
• Inertial frame
• Twin paradox
• Diffraction of light
• Wave particle duality
• Quantum nature of light
• Electromagnetic waves
• Wavelength of electromagnetism