00:01
Hello, here first we have to determine the total resistance.
00:04
Let's do this.
00:07
Let's draw the equivalent circuit.
00:09
Okay, and here let's not forget the battery.
00:58
Now we have to calculate the equivalent resistance.
01:03
Let's do this.
01:04
Let's start from...
01:05
Let's split it into the several sections.
01:08
Let's start with the first one.
01:12
This equivalent resistance is r1 plus r2, which is 12 ohms.
01:18
Now let's start with...
01:21
Let's look at the next section.
01:24
Let's call it some r, roman letter 2.
01:29
That's a parallel connection.
01:31
That's why we can calculate it as following.
01:34
Now let's calculate this r2.
02:03
And now let's label the next stage as r, roman letter 3...