00:01
For the following series circuit, right? 25 ohm it is given right? and suppose this is this has the value v1, this has the value v2, vr1, this is vr2, right? why is it so? because voltages are different in a series circuit, but current is going to be same, right? so first of all, we need to find out the equivalent resistance or you can say r total.
00:31
So r total would be equals to in series this is right? that would be 25.
00:37
This is added simply 25 plus 10 plus 15 plus 5 that is going to be how much? that would be 35, 35 then you have 50, 55.
00:52
This is in total it would be 55 ohm, right? and if you talk about i t.
00:58
So i t would be equals to v in that is the total value.
01:03
V in is the total value or you can say simply this is equals to v in, right? i am writing it as v1, okay v in that is that would be fine, okay? so now this becomes equals to v in and this is whole divided by r total, isn't it? so that would give you the value i t is equals to 100 by 55.
01:31
So how much is that? 100 by 55 that would be equals to 1 .818, right? so this is the value in amperes, this is the answer for i t, r t and i t.
01:56
Now moving forward with the v r1.
01:59
V r1 from voltage division formula you can write r1 what is the value of r1? r1 is 25.
02:07
25 upon you will add all these values, right? r1 plus r2 plus r3 plus r4, right? and this is whole multiplied by v in.
02:22
So what is that? 25 divided by 55 multiplied by v in...