It sounds very interesting. More than one path to the same answer always gives a much deeper understanding, but the math is beyond me. Will read again in a year from now!
Thanks for the feedback. I realize some of what I asked is not "necessary" - and probably out of my league, especially the math. But it seems important to have a picture in your head that at least isn't wrong. It's about that mental image - then later there won't be a ton of re-learning.
BTW -...
Yay! Finally I have picture - sketchy as h**k probably - but still, a picture from energy source to lighting the bulb! :) (Been on this for a while.)
I had been thinking along the lines of stored chemical energy released from bonding in some way - but I guess the ionization of the metal is...
OK, so the electrons aren't like "excited" - that's a relief! I did find that quite troubling to try to picture a lone electron traveling alone being "excited" since it ought then to be in one of the "allowed orbitals" around an actual ion.
So the electric field IS carrying the energy, much...
1. If e.m.f is NOT a force, but actually energy – and e.m.f is measured in Voltage – then why is p.d. (V) NOT used up? Since we know energy *does* get used up by the component.
I know the electrons are just the medium – energy carriers – but Voltage doesn’t mean number of electrons; it means...