SlideServe
Télécharger Obtenir Pro
Menu
Accueil Pro
Préférences
ApparenceLight Aide et commentaires
© SlideServe · v2026

Understanding Electrostatics, Magnetostatics, and Their Applications in Electromagnetism

penelope-adams avatar
penelope-adams
44 diapositives · 577 Views · Nov 19, 2014

This overview introduces the fundamental principles of electromagnetism, contrasting electrostatic and magnetostatic phenomena. The content includes key applications in technology, an overview of the electromagnetic spectrum, dimensions and units pertinent to the subject, and an explanation of the fundamental forces of nature, specifically focusing on electric forces and gravitational interactions. Complex numbers and their relevance in representing electromagnetic concepts are discussed, alongside practical examples like LED lighting and photovoltaics, showcasing modern applications of these principles.

#understanding electrostatics, magnetostatics, and their applications in electromagnetism #understanding electrostatics, magnetostatics, and their applications in electromagnetism ppt #powerpoint #presentation
Understanding Electrostatics, Magnetostatics, and Their Applications in Electromagnetism - slide 1
01 / 44Understanding Electrostatics, Magnetostatics, and Their Applications in Electromagnetism
1 / 17

Télécharger la présentation

Understanding Electrostatics, Magnetostatics, and Their Applications in Electromagnetism
Une image / un lien ci-dessous est fourni (tel quel) pour télécharger la présentation

Politique de téléchargement : le contenu du site vous est fourni TEL QUEL pour votre information et votre usage personnel ; il ne peut être vendu, concédé sous licence ni partagé sur d’autres sites sans l’accord de son auteur.Le contenu vous est fourni TEL QUEL, pour votre information et votre usage personnel uniquement. Téléchargez la présentation en cliquant sur ce lien. Lors du téléchargement, si vous ne parvenez pas à télécharger une présentation, l’éditeur a peut-être supprimé le fichier de son serveur.Pendant le téléchargement, si vous ne parvenez pas à obtenir une présentation, le fichier a peut-être été supprimé par l’éditeur.

F I N

Plus de contenu associé

Transcription de la présentation

  1. EKT 242/3 & EKT 241/41. INTRODUCTION Ruzelita Ngadiran

  2. Chapter 1 Overview • Electrostatic vs magnetostatic • EM applications • EM Timeline • Dimensions & Unit • Fundamental Forces of Nature • The EM spectrum • Complex number (Revision)

  3. objectives

  4. Electrostatic vs. Magnetostatic

  5. Examples of EM Applications

  6. Dimensions and Units

  7. Fundamental Forces of Nature

  8. Gravitational Force Force exerted on mass 2 by mass 1 Gravitational field induced by mass 1

  9. Charge: Electrical property of particles Units: coulomb One coulomb: amount of charge accumulated in one second by a current of one ampere. 1 coulomb represents the charge on ~ 6.241 x 1018 electrons The coulomb is named for a French physicist, Charles-Augustin de Coulomb (1736-1806), who was the first to measure accurately the forces exerted between electric charges. Charge of an electron e = 1.602 x 10-19 C Charge conservation Cannot create or destroy charge, only transfer

  10. Electrical Force Force exerted on charge 2 by charge 1

  11. Electric Field In Free Space Permittivity of free space

  12. Electric Field Inside Dielectric Medium Polarization of atoms changes electric field New field can be accounted for by changing the permittivity Permittivity of the material Another quantity used in EM is the electric flux density D:

  13. Magnetic Field Electric charges can be isolated, but magnetic poles always exist in pairs. Magnetic field induced by a current in a long wire Magnetic permeability of free space Electric and magnetic fields are connected through the speed of light:

  14. Static vs. Dynamic Static conditions: charges are stationary or moving, but if moving, they do so at a constant velocity. Under static conditions, electric and magnetic fields are independent, but under dynamic conditions, they become coupled.

  15. Material Properties

  16. The EM Spectrum

  17. Tech Brief 1: LED Lighting When a voltage is applied in a forward-biased direction across an LED diode, current flows through the junction and some of the streaming electrons are captured by positive charges (holes). Associated with each electron-hole recombining act is the release of energy in the form of a photon. Incandescence is the emission of light from a hot object due to its temperature Fluorescemeans to emit radiation in consequence to incident radiation of a shorter wavelength

  18. Tech Brief 1: LED Basics

  19. Tech Brief 1: Light Spectra

  20. Tech Brief 1: LED Spectra Two ways to generate a broad spectrum, but the phosphor-based approach is less expensive to fabricate because it requires only one LED instead of three

  21. Tech Brief 1: LED Lighting Cost Comparison

  22. Complex Numbers We will find it is useful to represent sinusoids as complex numbers Rectangular coordinates Polar coordinates Relations based on Euler’s Identity

  23. Relations for Complex Numbers Learn how to perform these with your calculator/computer

  24. Phasor Domain 1. The phasor-analysis technique transforms equations from the time domain to the phasor domain. 2. Integro-differential equations get converted into linear equations with no sinusoidal functions. 3. After solving for the desired variable--such as a particular voltage or current-- in the phasor domain, conversion back to the time domain provides the same solution that would have been obtained had the original integro-differential equations been solved entirely in the time domain.

  25. Phasor Domain Phasor counterpart of

  26. Time and Phasor Domain It is much easier to deal with exponentials in the phasor domain than sinusoidal relations in the time domain Just need to track magnitude/phase, knowing that everything is at frequency w

  27. Phasor Relation for Resistors Current through resistor Time domain Time Domain Frequency Domain Phasor Domain

  28. Phasor Relation for Inductors Time domain Phasor Domain Time Domain

  29. Phasor Relation for Capacitors Time domain Time Domain Phasor Domain

  30. ac Phasor Analysis: General Procedure

  31. Example 1-4: RL Circuit Cont.

  32. Example 1-4: RL Circuit cont.

  33. Tech Brief 2: Photovoltaics

  34. Tech Brief 2: Structure of PV Cell

  35. Tech Brief 2: PV Cell Layers

  36. Tech Brief 2: PV System

  37. Summary