Solution: Consider the circuit shown in the sketch. The current in the 8.0 Ω resistor is 2.0 A, in the direction shown. What is I1, the current through the 4.0 Ω resistor?  

Problem

Consider the circuit shown in the sketch. The current in the 8.0 Ω resistor is 2.0 A, in the direction shown.

What is I1, the current through the 4.0 Ω resistor?