How do I apply KCL here? (1 Viewer)

[elobski]

hey guys,
this might be a pretty dumb question but how would I get the current draw for r2 using Kirchhoff's current law?

 

[StudyOnly]

Did you get an answer yet? I got 1200ohms for R2, then using V=IR I got I = 36/1200 = 0.03A. I am fairly sure it is correct since if I add it with the current from the 400ohm resistor I get 120mA. I'll explain it further if it is confirmed correct or if you want a further explanation.