I'm trying to understand the concept of voltage and I've reached section six of chapter one (http://www.allaboutcircuits.com/vol_1/chpt_1/6.html) of the book on this website.
The author explains that voltage is basically "potential" and can be thought of as the same concept of dropping a rock from a certain height.
I think I understand what he is saying, but I'm confused when the author says this:
If my source voltage is 9v, I don't understand what the author means by saying "we should expect to see a substanial amount of voltage between points 2 and 3".
Isn't the voltage 9v but then DROPS between points 2 and 3? (eg. the "potential" energy [voltage] starts at 9v, but encounters resistance [a light-bulb] so it now is only 7v after the battery?) I don't understand how there is "substanial voltage" between 2 and 3?!
Please help!
Thanks!
The author explains that voltage is basically "potential" and can be thought of as the same concept of dropping a rock from a certain height.
I think I understand what he is saying, but I'm confused when the author says this:
(Please search the page in the link above to find the context for this quote).In a normal lamp circuit, the resistance of a lamp will be much greater than the resistance of the connecting wires, so we should expect to see a substantial amount of voltage between points 2 and 3, with very little between points 1 and 2, or between 3 and 4.
If my source voltage is 9v, I don't understand what the author means by saying "we should expect to see a substanial amount of voltage between points 2 and 3".
Isn't the voltage 9v but then DROPS between points 2 and 3? (eg. the "potential" energy [voltage] starts at 9v, but encounters resistance [a light-bulb] so it now is only 7v after the battery?) I don't understand how there is "substanial voltage" between 2 and 3?!
Please help!
Thanks!