00:03
So if we're looking at three resistors, r1, r2, and r3, and we want to kind of figure out, when we put these together in a circuit and connect them, what is the largest possible resistance that we can get and what is the smallest possible resistance? so when we think about the ways in which we can connect these resistors, we have connecting them in series, connecting them in parallel or some combination thereof.
00:34
So what we're doing when we're connecting resistors in series is that their equivalent resistance actually increases because we're just adding them.
00:44
So as we can see here from this formula, to get the largest possible resistance, all we would have to do is put these three resistors in series and then add them all up to get the equivalent resistance.
00:57
So when we do r1 plus r2 plus r3, we end up getting a value of 786 oms.
01:11
And so that is the upper limit of the resistance, the equivalent resistance that we can get when we put this combination of resistors together.
01:23
Now when we think about what the smallest possible resistance you can get is, putting them all in parallel to each.
01:30
Other is actually what we're going to do because when we put resistors in parallel, what we're doing is reducing the equivalent resistance...