Finding expresion for current through resistor

leopard · 2008-12-17T13:53:02+00:00

I want to find an expression for I_5. I see that I_{S1} = I_4 - I_5, but how can I proceed from here?

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leopard

I want to find an expression for [tex]I_5[/tex].

I see that [tex]I_{S1} = I_4 - I_5[/tex], but how can I proceed from here?

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buffordboy23

What other info were you given for the problem? What are the resistances, etc.?

Just use Kirchoff's voltage and current laws.