1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

B Dipole moment

  1. Aug 23, 2016 #1
    What does it mean when we say "centre of charges coincide"? What is the physical meaning of dipole moment?
  2. jcsd
  3. Aug 23, 2016 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

  4. Aug 23, 2016 #3
    I guess you are referring to the explanation of polar and non-polar molecules required for explaining Polarization in dielectrics. If that is the case, then the meaning of "centers of charges coincide" is that the entire molecule is imagined to be like a rigid body . Now we know that in a rigid body the center of mass is the point where the entire mass of the body is supposed to be concentrated. Similarly in a molecule which has multiple charges of two kinds ( positive and negative) we imagine as if the centers of these charges are the points where the charges are concentrated. In absence of electric field these centers overlap on each other for non-polar molecules and are separated in polar molecules . Frankly speaking these are models to describe observed phenomena.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted