## Introduction to ElectrodynamicsThis well-known undergraduate electrodynamics textbook is now available in a more affordable printing from Cambridge University Press. The Fourth Edition provides a rigorous, yet clear and accessible treatment of the fundamentals of electromagnetic theory and offers a sound platform for explorations of related applications (AC circuits, antennas, transmission lines, plasmas, optics and more). Written keeping in mind the conceptual hurdles typically faced by undergraduate students, this textbook illustrates the theoretical steps with well-chosen examples and careful illustrations. It balances text and equations, allowing the physics to shine through without compromising the rigour of the math, and includes numerous problems, varying from straightforward to elaborate, so that students can be assigned some problems to build their confidence and others to stretch their minds. A Solutions Manual is available to instructors teaching from the book; access can be requested from the resources section at www.cambridge.org/electrodynamics. |

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### Contents

1 | |

Electrostatics | 59 |

Potentials | 113 |

Electric Fields in Matter | 167 |

Magnetostatics | 210 |

Magnetic Fields in Matter | 266 |

Electrodynamics | 296 |

Intermission | 355 |

Electromagnetic Waves | 382 |

Potentials and Fields | 436 |

Radiation | 466 |

Electrodynamics and Relativity | 502 |

Vector Calculus in Curvilinear Coordinates | 575 |

The Helmholtz Theorem | 582 |

Units | 585 |

589 | |

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Ampère's law angular answer assume atom axis Biot–Savart law bound charge boundary conditions calculate capacitor charge density charge distribution charge q components conductor configuration constant coordinates Coulomb Coulomb's law curl cylinder derivative direction displacement distance divergence divergence theorem electric and magnetic electric field electrodynamics electromagnetic electron electrostatic energy Example field inside FIGURE Find the electric Find the potential flux formula free charge frequency function Gauss's law Gauss’s law gradient infinite infinity Laplace's equation line integral linear dielectric Lorentz force law magnetic dipole magnetic field magnetic force magnetostatics Maxwell’s equations momentum motion moving origin particle perpendicular Phys point charge polarization Poynting vector Prob Problem radiation region relativistic scalar Sect Show shown in Fig ſº solenoid Solution speed spherical steady current Suppose surface charge theorem total charge unit vector potential velocity volume wave wire zero