What is the Junction Equation for this Circuit?

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SUMMARY

The junction equation for the given circuit is established as I3 = I1 + I2 + I4. This conclusion is drawn from the analysis of current flow at the junction, where I1 and I3 are incoming currents, while I2 and I4 are outgoing currents. The application of Kirchhoff's Current Law (KCL) confirms that the sum of currents entering a junction equals the sum of currents leaving it.

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Homework Statement


circuit.png

I can't tell what the junction equation is for the following circuit. To me it looks like I3=I1+I2+I4 but I'm not sure.

Homework Equations

The Attempt at a Solution

 
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Consider the bottom wire as a junction...
i1 and i3 flow in
i2 and i4 flow out
 

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