$($a$\text{'})$ An insulated piston$-$cylinder device initially contains $0\mathrm{.}3m^3$ of air at $200$ kPa and $27C.$ An electric switch

is turned on$,$ and a $110-$V source supplits current to a resistance heater inside the cylinder for a period of

$10$ min $.$ The pressure is held constant during the process, while the volume is doubled. Determine the

current that passes through the resistantee heater. Por air, take: $R=0\mathrm{.}287\frac{k}{k}g*K,C_r=0\mathrm{.}717\frac{k}{k}g*K,F=1\mathrm{.}4.$