Recent content by gareth182

Electric field of a dipole, two different equations?? Hi, I've been taught in uni how to derive the electric field of a dipole to be E= k p [2cos theta r(hat) + sin theta theta(hat)]/(r^3) where k=1/(4pi e0), p=qd= dipole moment, (hat) terms are unit vectors and r is the distance...

Hi, Iv'e been struggling on the same kind of question but think I can do it up to the stage you're asking about. It's useful to consider 2a as a vector going from the -ve dipole to the +ve one. Also take vector "r" to go from the half way point of "a" to the point of observation. You...

Hi, Iv'e been struggling on the same kind of question but think I can do it up to the stage you're asking about. It's useful to consider 2a as a vector going from the -ve dipole to the +ve one. Also take vector "r" to go from the half way point of "a" to the point of observation. You should...