00:01
Okay, so as in the other questions, i can't see a circuit pictured.
00:06
So i'm not going to be able to answer it exactly.
00:09
However, what i can do is take an example circuit and explain how you do it in that one.
00:15
And then hopefully you can take this logic and apply it to the circuit that you do have.
00:19
So we're going to go through the concept here, but if you're still a bit confused by the end and you want the specific example that you have going through, then it would be really helpful if you could re -upload the question with a photo of the circuit attached.
00:34
So i'm going to say that this is what the circuit looks like.
00:38
And we want the voltage dropped across r3.
00:41
Now i'll call that voltage v3.
00:45
And remember that in a parallel circuit, the voltage splits, well, the full voltage available to it goes to.
01:04
All branches.
01:07
So it doesn't split.
01:10
Each branch gets the full share of the voltage available to the whole circuit.
01:14
So we can rewrite this circuit as one which looks like this.
01:26
So this is just an example.
01:28
Obviously this might not be the circuit you have.
01:30
Where r23 is the combination of the parallel circuit here.
01:38
So we can see that v3 is going to be equal to v2, the voltage to resistor 2 because those two are in parallel so they get the same voltage and that's going to be just equal to the voltage that that combination gets and that is just going to be equal to the current that that combination gets times the resistance of that combination.
02:01
Now the current that it gets because r2 -3 is in series with r1 and r4 they each get the full share of the current because because in a series circuit, all components get the full current...