Find Ix in the network


Find I_x in the network.

Find Ix in the network

Image from: Irwin, J. David., and R. M. Nelms. Basic Engineering Circuit Analysis, Tenth Edition. N.p.: John Wiley & Sons, 2010.

Solution:

We can figure out I_x by writing Kirchhoff’s current law for the whole circuit loop. (Forgot Kirchhoff’s current law?)

-2I_x+4mA-12mA+I_x+3I_x=0

2I_x=8mA

I_x=4mA

This question can be found in Basic Engineering Circuit Analysis, 10th edition, chapter 2, question 2.14.

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