# Hertzian Dipole and finding its orientation

1. Sep 9, 2011

### confusedalot

Hi,

If I have a magnetic field orientated in the x-direction, a dipole positioned on the z-axis how do I find which direction the dipole is orientated? Is it just as simple as using the right hand grip rule? In which case the dipole is orientated along the y-axis? Or is it more complicated such as finding the vector product?

Cheers,

Paul

2. Sep 11, 2011

### Spinnor

Draw the x,y, and z axis. Stick a dipole at z = a. Start with dipole orientated in the z direction. The magnetic field lines will be circles centered about the z axis. For the density of such lines see,