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Results tagged with electrostatics
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user 130288
Electrostatics is concerned with the electrical fields and scalar potentials of stationary electrical charges and charge distributions. Use this for questions about electromagnetic situations in which currents and magnetic fields are absent, otherwise use the [electromagnetism] and/or [magnetic-fields] tags.
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Direction of electric dipole moment and magnetic dipole moment
For electric dipole: The direction of the dipole moment is from negative to positive charge, but that of the electrostatic field is from positive to negative. But in the case of magnetostatics, the ma …
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Multipole Expansion: Electrostatics
Why in multipole expansion (or the terms therein) goes as mono-, di-, quadru-, octu-, or more specifically why are they in powers of 2? Why can't we have hexapole for instance?
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Electric Field in a Dielectric
Suppose a dielectric with no free charges is placed in an electric field (E). Once polarized, the total "volume bound charge " equals total "surface bound charge" right ? In this condition, the extern …
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Choice of Origin in Multipole Expansion in Electrostatics
In a multipole expansion in electrostatics, how do we select the origin? For instance, if there is a linear continuous distribution of charge $+Q$ (say from $x = -a$ to $x = +a$). …
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Choice of Origin in Dipole moment calculation
I understand (Choice of Origin in Multipole Expansion in Electrostatics) that in multipole expansion I need not choose any particular origin during calculation. …
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