How to Determine the Current in This Circuit?

[W1z0]

Hi all,

I've got a problem with the circuit of the image. The solution (intensity) is given but i would like to know how to get it... Can anyone help me?

[PLAIN]http://img191.imageshack.us/img191/9094/circuitf.gif

Thanks!

 

[berkeman]

Hi all,

I've got a problem with the circuit of the image. The solution (intensity) is given but i would like to know how to get it... Can anyone help me?

[PLAIN]http://img191.imageshack.us/img191/9094/circuitf.gif

Thanks!

Welcome to the PF.

I is the current, not the "intensity". What do you know so far about how to solve for the properties of circuits like this? Have you learned how to use Kirchoff's Current Law (KCL) equations to work with circuits?