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  • Electric field Difference between Electrostatics and Electrodynamics
    In electrostatics (where the charges are not moving): a) Electric fields are time- independent but position-dependent b) Electric fields are always zero inside a charged or uncharged conductor At the conductor surface, the E field is nonzero and perpendicular to the surface itself
  • Is Gravity Just the Electrostatic Force? - Physics Forums
    It's pretty easy to disprove this idea, even on the level of Newtonian gravity: First of all the sources of the electrostatic field are charge distributions at rest, those of the gravitational field are mass distributions, and in electrostatics like-sign charges repell, while the always positive (i e , like-sign) masses attract each other
  • Electrostatics: Gauss Law Problem Finding the Flux through a . . .
    I think the answer to part (i) is given wrong The flux can't be zero because there is a charge Q 2 enclosed by the shell So, the flux should be Q 2 divided by permittivity of free space Now in part (iii), the force on charge at point A is given correct However, the force on charge at centre
  • Div D, div E. What rho is it. (electrostatics) - Physics Forums
    I know that the D field has to do with free charges So when we write Maxwell's equation ##\\vec \\nabla \\cdot \\vec D = \\rho## we mean rho as the free charge density which does not include the bound charges also known as polarized charges I know that the E field has to do with both the free
  • Main difference between electrostatics and magnetism - Physics Forums
    The basic idea is that electrostatics is the study of static (unchanging) electric fields, electric charges, and the rules governing their interactions Magnetism is the study of static magnetic fields, magnets, and the rules for their interactions
  • Books on Electrostatics for IIT Prep - Physics Forums
    can anyone suggest me books on electrostatics and electromagnetism at a graduate level as iam preparing for indian institute of technology (iit) it would be a great help for me If you are going to be in a physics department then, as others have stated, Jackson is the standard graduate-level book
  • Mean Value Theorem of Electrostatics - Physics Forums
    In "Classical Electrodynamics - 3rd Ed ," J D Jackson has an exercise, 1 10, to derive the mean value theorem of electrostatics Does anyone know of a derivation which is located on the web? Pete
  • Earnshaws Theorem and electrostatics - Physics Forums
    14: a: It is impossible to have a stable equilibrium in electrostatics This idea is known as Earnshaw’s Theorem Let’s prove this fact Assume that at a particular point P that a charge Q is in a stable equilibrium Think about the direction of E⃗ necessary for the equilibrium
  • Where to find this uniqueness theorem of electrostatics? - Physics Forums
    There is a nice uniqueness theorem of electrostatics, which I have found only after googling hours, and deep inside some academic site, in the lecture notes of Dr Vadim Kaplunovsky: Suppose some volume ##\\Omega## is not empty but contains several charged bodies, dielectrics or conductors For





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