Electric dipole Definition and 157 Threads

A simple electric dipole in an external magnetic field performs harmonic motion (for small angles between E and L) due to the moments by the forces acting on the respective charges. Assuming there is no system to dissipate energy that is. The mechanic moment is given by p x E and the energy of...

First: A rigid electric dipole is free to move in the electric field in the pic... http://img53.imageshack.us/img53/6950/untitled8kz.jpg Which one of the following phrases most accurately describes the initial motion of the dipole if it is released from rest in the position shown? The...

http://img79.imageshack.us/img79/2859/dipoleelectricfield5nh.png I used the equation E= kqd/(L^3) L=sqrt(h^2+(d/2)^2) I got the first answer (for P1). I can't figure out how to utilize that equation for P2. The second question asks: "What is the magnitude of the electric field...

Hi, I am confused about the electric dipole selection rules. Delta l = +/- 1 Delta m_l = 0, +/- 1 but are there rules for Delta j and Delta m_s and Delta n? Is there a (semi-rigorous) way to conceptually understand selection rules? Thanks.

Hi, I have a question on selection rules for electric dipole transitions. It has to do with a GRE Physics exam question that's confusing a number of students at grephysics.net ... if any of the quantum guru's here would like to help, please check it out at...

This article (eight pages): http://uk.arxiv.org/PS_cache/physics/pdf/0502/0502106.pdf is an interesting little suggestive piece on the connections between quantum gravity and residual electromagentic effects of electrical dipoles in electrically neutral atoms.

Point charges -5.00 C and +5.00 C are separated by distance 3.20 m, forming an electric dipole. What is the direction of the electric dipole moment? From + to -?