I know this question has been posted before but there are a few questions I have that I couldn't find anywhere else, which I guess stem from the fact that I don't understand the concept of voltage.
1) From what I've figured out voltage is the potential energy between two points in a circuit. What is it meant then when you hear things like a "9 volt battery". If it has to be between two points then what are the reference points when people talk about an x-volt battery?
2) In a table of a series circuit like this (with only a battery and 3 resistors):
By the time you get to the third resistor, all of the voltage has been dropped. So how does the circuit even manage to finish? If only 9 volts are supplied and by the third resistor all 9 volts have been dropped, how can it complete the circle? I guess I also don't understand the concept of a voltage drop.
3) How is it that in a parallel circuit each branch has equal amounts of voltage? To me it seems like the voltage should be divided by the amount of branches because with each additional branch the potential amount of electrons to flow through would get smaller, which obviously isn't right.
1) From what I've figured out voltage is the potential energy between two points in a circuit. What is it meant then when you hear things like a "9 volt battery". If it has to be between two points then what are the reference points when people talk about an x-volt battery?
2) In a table of a series circuit like this (with only a battery and 3 resistors):
By the time you get to the third resistor, all of the voltage has been dropped. So how does the circuit even manage to finish? If only 9 volts are supplied and by the third resistor all 9 volts have been dropped, how can it complete the circle? I guess I also don't understand the concept of a voltage drop.
3) How is it that in a parallel circuit each branch has equal amounts of voltage? To me it seems like the voltage should be divided by the amount of branches because with each additional branch the potential amount of electrons to flow through would get smaller, which obviously isn't right.