## Classical theory of electricity and magnetism: a course of lectures |

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Page 42

Field in 3 cavity in a

intensity in a

force depends on the form of the cavity in the

test ...

Field in 3 cavity in a

**dielectric**. Suppose we are interested in determining theintensity in a

**dielectric**by measuring the force on a charge. It turns out that theforce depends on the form of the cavity in the

**dielectric**we make to introduce ourtest ...

Page 47

A small

potential 0 = ar2. Calculate the force on the sphere. 2. Show that if for a given

arrangement of conductors 0, p, qt and 0', p', q'i be two possible distributions of ...

A small

**dielectric**sphere of radius a is placed at the origin in an electric field withpotential 0 = ar2. Calculate the force on the sphere. 2. Show that if for a given

arrangement of conductors 0, p, qt and 0', p', q'i be two possible distributions of ...

Page 80

CDEF is a

between the plates. If now we consider a virtual displacement of the

slab inwards, there will be a decrease of potential energy as we have just now

seen.

CDEF is a

**dielectric**slab of thickness d which is partially in the Fig. 3 spacebetween the plates. If now we consider a virtual displacement of the

**dielectric**slab inwards, there will be a decrease of potential energy as we have just now

seen.

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### Contents

The empirical basis of electrostatics | 1 |

Direct calculation of fields | 7 |

dipoles9 The Dirac 5function13 | 13 |

Copyright | |

23 other sections not shown

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acceleration angle angular axis boundary conditions calculate called centre charge density charge distribution charged particle coefficient coil components conducting conductor consider coordinates dielectric constant differential dipole direction distance divergence electric and magnetic electric field electromagnetic field electromotive force electron electrostatic energy flux equation 16 expression field due field point finite fluid formula Fourier frame frequency function given gives Hence incident infinite interaction isotropic Laplace's equation linear Lorentz transformation magnetic field magnitude Maxwell's equations medium molecule momentum motion number density obtain orthogonal oscillations permanent magnets perpendicular photon plane plasma point charge polarization potential due Poynting vector radiation field radiation reaction radius refractive index region relation result satisfied scalar shows sin2 solution special theory sphere at infinity spherical surface integral symmetry tensor term theorem theory of relativity transverse uniform vanishes vector potential velocity volume wave length write zero