## Classical ElectrodynamicsProblems after each chapter |

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Page 107

The presence of the divergence in the polarization - charge density seems very

natural when one thinks of how this part of the charge density is created . If we

consider a small

may ...

The presence of the divergence in the polarization - charge density seems very

natural when one thinks of how this part of the charge density is created . If we

consider a small

**volume**in the medium , part of the charge inside that**volume**may ...

Page 190

( 6.81 ) Since the

differential continuity equation or conservation law , au + V.S = -JE at ( 6.82 ) The

vector S , representing energy flow , is called Poynting's vector . It is given by S =

( E X H ) ...

( 6.81 ) Since the

**volume**V is arbitrary , this can be cast into the form of adifferential continuity equation or conservation law , au + V.S = -JE at ( 6.82 ) The

vector S , representing energy flow , is called Poynting's vector . It is given by S =

( E X H ) ...

Page 384

The Lorentz force equation can be written as a force per unit

representing the rate of change of mechanical momentum of the sources per unit

densities .

The Lorentz force equation can be written as a force per unit

**volume**(representing the rate of change of mechanical momentum of the sources per unit

**volume**) : 1 f = pE + J x B ( 11.126 ) where J and p are the current and chargedensities .

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### Contents

Introduction to Electrostatics | 1 |

References and suggested reading | 23 |

Multipoles Electrostatics of Macroscopic Media | 98 |

Copyright | |

6 other sections not shown

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acceleration angle angular applied approximation assumed atomic average axis becomes boundary conditions calculate called Chapter charge charged particle classical collisions compared component conducting Consequently consider constant coordinates cross section cylinder defined density dependence derivative determine dielectric dimensions dipole direction discussed distance distribution effects electric field electromagnetic electron electrostatic energy equal equation example expansion expression factor force frame frequency function given gives incident inside integral involved light limit Lorentz loss magnetic magnetic field magnetic induction magnitude mass means modes momentum motion moving multipole normal observation obtain origin parallel particle physical plane plasma polarization position potential problem properties radiation radius region relation relative relativistic result satisfy scalar scattering shows side solution space sphere spherical surface transformation unit vanishes vector velocity volume wave written