Hey, first of all, I wanted to know that if you pass an electric current through an iron rod, for example, then what would be the relationship of it's electric field and magnetic field? Will they be parallel to each other or perpendicular? Second: suppose to fire a particle, let it be negatively charged, for argument's sake in a space where the electric field and the magnetic field are in the same direction, then describe the path of the particle? what if the electric field is perpendicular to the magnetic field? what if the electric field is in the opposite direction to the magnetic field? Third: If the photon is the fundamental electromagnetic force carrier, then why doesn't a magnetic field comprise of photons? Same for an electric field? If it has nothing to do with either, what then, are the magnetic fields and electric fields made of?