I work as a physics teacher at a high school and I have to explain these days the magnetic field of a curreny carrying wire. Of course I may just give the formulae and describe how the field $\vec{B}$ looks like. However, I would like to give a bit of insight to them on the physics behind this.
Before that I explained what is a dipole, and then, from that, I explained ferromagnetism. I was wondering if I can explain the $\vec{B}$ created by a moving particle without going into Special Relativity. Thus, I was wondering if a moving charge could be considered as a dipole, since by passing through some material, the negative charge goes forward, and the holes go inwards, so that somehow we have got there a dipole. Could this be somehow a correct intuitive explanation?
