Learn Mesh Analysis: Find Current in RL Circuits

[tnecniv]

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How do i use mesh analysis to find the current of RL?
can someone teach me how i should indicate the loops and +/- on the circuit?

 

[berkeman]

[PLAIN]http://picasaweb.google.com/lh/photo/F1hFT0SaSpFdLqSvFA-BHA?authkey=Gv1sRgCMGC37jJtMLiXQ&feat=directlink

Image : [PLAIN]http://picasaweb.google.com/lh/photo/F1hFT0SaSpFdLqSvFA-BHA?authkey=Gv1sRgCMGC37jJtMLiXQ&feat=directlink

How do i use mesh analysis to find the current of RL?
can someone teach me how i should indicate the loops and +/- on the circuit?

Please show us your attempt at a solution. We do not do your homework for you here.

You can also search at wikipedia.org for basic tutorial info on mesh analysis.

 

[mohamad hajj]

you can choose any sense of the loops(clockwise,anticlockwise,or both).it doesn't affect the final result..but for each sense of the loop in a mesh,u have to form the kirchhoffs equation according to the loop's sense you put...
u finally get a system of equations with several unkowns...
take this easy operation:
suppose u have three meshes:
put all the current loops in a clockwise direction (I1,I2,I3 respectively)
consider the 3 matrices (v),(z)and(I)
and (v)=(z)(I) , (I)=(I1,I2,I3) , (v)=(sum of "voltage sources" according to sense of current in the first mesh, similarly for the 2nd mesh,similarly for the 3rd mesh)

for (z): z11: sum of empidences of mesh 1
z22:sum of empidences of mesh 2
z33:sum of empidences of mesh 3
z12:minus (sum of commom empidences between meshes 1 and 2)
z13:minus(sum of commom empidences between meshes 1 and 3)
z23:minus(sum of common empidences between meshes 2 and 3)

z12=z21, z31=z13, z23=z32;
so u abtain the system and u get I1,I2,I3...

and so, u can perform this operation for any number of meshes (sense of loops are clockwise! here)
thank you