00:02
All right, so this time we have a circuit that has two power supplies that have their negative terminals pointed at each other in the series.
00:12
So when that happens, we need to subtract the two power supplies individual voltages to find the total.
00:20
So it's going to be 24, and it's going to end up with the positive this way and the negative that way.
00:28
So it's going to actually move this way.
00:30
So the i is going to be this direction and go around like this.
00:43
So if i'm thinking of these two power supplies, it's one equivalent power supply.
00:48
It's now 24.
00:53
So i'm going to put that in as my total b.
00:59
So that was the first step.
01:00
Now, we also have a series circuit again.
01:04
And so the total resistance is just add them all together.
01:08
So total resistance is 12 ,000 oms.
01:11
Or 12 kilohms.
01:13
And then our last thing that we need for the i value is we get got over with our own's law 24 to by 12 ,000 tell us our current flow.
01:32
0 .02 or 0 .002 ams.
01:38
And we know from the conservation in charge that the current flow needs to be constant throughout the series circuit.
01:51
So they're all going to have 0 .02 amps.
01:55
Now we can find out the voltage from there for each independent device.
02:00
So 0 .002 times 2000 gets this a 4 volt supply on r1.
02:10
So this is the r1.
02:12
This is r2.
02:13
This is r3.
02:16
This one's 8 volts.
02:18
And then the last one is 12...