You're 100% correct. The explanations I was reading gave me the impression that we can get rid of the magnetic field - but this only works in special cases. Rig

You're 100% correct. The explanations I was reading gave me the impression that we can get rid of the magnetic field - but this only works in special cases. Right now I'm reviewing my notes and realizing that yup - they're both needed and will need to modify my explanation there or simply get rid of it entirely and keep things simple. Once again - thank you for the correction - you're a life saver this is definitely something which I overlooked and I wish I had more time to explain properly!