What made me say that electric field is the stable form ofmagnetic field is the fact that;when electricity is converted to heat energy,a small fraction of the heat is examined to be magnetic accordding to the coil setup.and electricity can only be converted to magnetic force and heat. So what i am saying is that,we all know almost all energy forms is lost as heat during a convertion process.which means heat produced even in the convertion of electric to magnetic is just an energy lose,leaving combination of positive and negative charges to form magnetic fields.