Find I and Vs in the circuit (shown in the attachment) if the current through the 3 ohm resistor is 2A.
See attached file for full problem description.
The voltage across the 3 ohm resistor is 2 A * 3 ohm = 6 V.
This is the same voltage across the 6 ohm resistor (since they are in parallel). The 6 ohm resistor has 6 V / ...
This solution looks at a circuits problem: finding current and voltage.