Find I_x 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.