00:01
Hello students, let's solve this question.
00:02
Here we can use the kirchhoff's current law at the node v, that is here.
00:11
So, here we know that the equation will be the current entering the loop will be equal to the current leaving the loop, that is, 0 -v divided by 20 plus 10 plus 2 .4 will be equal to v minus va divided by 6.
00:32
So, rearranging we can write minus v by 30 minus v plus va divided by 6 will be equal to minus 2 .4 and the value that the equation will be minus 6v plus 5va will be equal to minus 72.
00:53
Let's mark it as equation number one.
00:56
Now, applying the kirchhoff's second, sorry, the current law at the node va, we'll get the equation that is v minus va divided by 6 is equal to v plus va divided by 90 plus va divided by 10.
01:14
It will be v0 plus 9va divided by 90.
01:21
On further simplification, we'll get v minus 15 by 9 into va is equal to 0.
01:29
Let's mark it as equation number two...