Chapter 11

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Chapter 11: Energy, power flow, and forces (PDF)
11.0 Introduction
  • Power flow in a circuit
  • Overview
11.1 Integral and differential conservation statements
11.2 Poynting's theorem
  • Systems composed of perfect conductors and free space
11.3 Ohmic conductors with linear polarization and magnetization
  • An alternative conservation theorem for electroquasistatic systems
  • Poynting power density related to circuit power input
  • Poynting flux and electromagnetic radiation
11.4 Energy storage
  • Energy densities
  • Energy storage in terms of terminal variables
11.5 Electromagnetic dissipation
  • Energy conservation for temporarily periodic systems
  • Induction heating
  • Dielectric heating
  • Hysteresis losses
11.6 Electrical forces on macroscopic media
11.7 Macroscopic magnetic forces
  • Reciprocity conditions
  • Finding the coenergy
  • Evaluation of the force
  • The torque of electrical origin
11.8 Forces on macroscopic electric and magnetic dipoles
  • Force on an electric dipole
  • Force on electric charge derived from energy principle
  • Force on a magnetic charge and magnetic dipole
  • Comparison of Coulomb's force to the force on a magnetic dipole
11.9 Macroscopic force densities
  • The Lorentz force density
  • The Kelvin polarization force density
  • The Kelvin magnetization force density
  • Alternative force densities
11.10 Summary

11.6.2: Force on a liquid dielectric (Courtesy of Education Development Center, Inc. Used with permission.)

 Demo Demo and Theory

11.7.1: Steady state magnetic levitation

 Demo Demo and Theory