A 3-Ohm resistor is connected in parallel with 6-Ohm resistor. This combination is connected in series with 4Ohm resistor. The resistors are conncted to a 12-Volt battery. How much power is dissipated in the 3-Ohm resistor

Find the equlivelent resistance. Then the current through the parallel combination. Thus use current division to find the rest. HOMEWORK!