00:02
Find the three currents i1, i2, i3 in the circuit by using kirchhoff's rules where v1 is equals to 15 volts, v2 equals to 12 volts and v3 equals to 8 volts right.
00:21
So we are going to use given current and loop directions.
00:26
So what is l1 and l2 here? l1, l2 represents the loop.
00:30
So we have to consider this loop in this way right.
00:34
So this is basically the direction given to us already right.
00:37
So we will make an equation for the like for kvl and kcl according to this problem itself and the direction of i1, i2, i3 is given to us.
00:49
We need to find i1, i2, i3 respectively.
00:52
So what we will do is we will use here kvl, kcl and ohm's law correct.
01:00
So what is ohm's law? ohm's law says that summation of v here you can see summation of v should be equals to summation of ir.
01:08
Why i am writing this is there is a reason because when you make an equation so now it becomes summation of ir minus summation of v equals to zero.
01:19
So whenever there is when the current is in the direction from positive to negative terminal terminal so that means this is in the direction of current so it will be taken positive itself right.
01:35
But when the voltage is basically from positive to negative the current is going positive to negative itself correct.
01:45
Outside the circuit i am talking about like this is negative terminal and positive terminal.
01:50
So we are talking about this outside circuit okay.
01:53
So when this is positive to negative this is positive then it is going to negative.
01:58
So that means that should be taken as negative value correct.
02:04
Further we will let you know that how to do so.
02:07
So there could be so many ways to solve this problem okay.
02:12
But there should be a certain like rule that should be followed all throughout the problem right.
02:21
If you mix two ways all together then it will be very difficult to get the answers right.
02:29
So this is very important...