Hey there, just to make sure I have all my concepts right. Voltage is the potential energy between two points, or the 'work needed to push an eletron', and current is the flow of eletrons, bigger the current, bigger the number of eletrons flowing. Current needs to flow from a higher charge to a lower charge, in some way to balance things, if there's not a second charge there will be no current, therefore eletrons will not move. So my question is, imagining we have a diode connect to an ac source, how are the eletrons 'moving past' the diode (since the eletrons are not moving) ? In a situation where there's not an open circuit, and with an increasing positive charge, the depletion region will shrink, due to the accumulation of positive charges. So it would be necessary 0.7 volts to shrink the depletion zone to make the diode a short circuit, coming x from one side and leaving x-0.7 from the other. I don't get how an open circuit bypasses this, take the capacitor as an example, it blocks all DC current even in an open circuit, what's the difference.
BTW: What does it mean, in AC current, for it to have many directions and DC just one?
When I say 'higher charge to a lower charge', I don't know if my terms are correct, I meant like from DC power to ground.
These question have been bugging my head all day, if you could shed some light, I would appreciate it.
BTW: What does it mean, in AC current, for it to have many directions and DC just one?
When I say 'higher charge to a lower charge', I don't know if my terms are correct, I meant like from DC power to ground.
These question have been bugging my head all day, if you could shed some light, I would appreciate it.