I don't mean that I didn't work hard in GCSE, well I kind of didn't but that's not the point...I just came to realize that I didn't really think as deeply or question what I learnt in GCSE physics as much as I should've done. So for example, can some please explain as truthfully as possible what electricity is ( it's current but then what is current, current is flow electron and electron is actually made up of charge which is coulombs??) right now for me these are just words and at GCSE I would've just gone with it cause I did last minute revision and I gave myself no time to process the depth of it but I feel as though I am lacking the basic concept and understanding now.
If you were to explain to a total newb how would you describe what charge/ coulomb is and also with detail?
This next question might be stupid af...but what's the difference between flow of electrons and free electrons? Free electrons in metal, when metal is heated, diffuse out and collide with other atom...this is correct right? So doesn't this mean that there is a flow/movement of electrons which is the same as current???
One last question, I know that the potential difference of a cell is basically how much energy each electron delivers, so in a series circuit the p.d. is shared. This would mean that if there were two component with the same resistance, then it would mean same current and therefore amount of electrons are passing the component per second, but because there is two component the p.d. is shared, so if total p.d. was 4V, it would be 2 V for each component. How and why, how did they come to this rule? I am thinking that if it passes through the first component then why doesn't that component just use 4 V, after all isn't it how much energy the cell delivers so why is it not able to deliver the same amount for both component? Voltage pushes electrons around in a circuit so why wouldn't the first component get the full energy from the electron cause nothing else has came between it ?
I am very confused and I am pretty sure I have my rules of circuit and electricity pretty messed up. Please help me...I honestly tried to go over the GCSE physics book again and this why on the second time, I realized that I actually don't understand most parts of what they are saying and the reason behind the rules...or even the true meaning of some of these words.
Thanks!!!