Answer
a). $0.5714ohm$
b). $6V$
c). $9 watts$
Work Step by Step
a) $\frac{1}{Req}=\frac{1}{1}+\frac{1}{2}+\frac{1}{4}$
Therefore, $R_{eq}=0.5714\,\,Ohm$
b) Voltage across each resistor is equal = 6V
c) Current in 4ohm resistor = $\frac{6}{4}=1.5A$
Power = $V\times current=6\times1.5=9 watts$
