A mass of 12kg of saturated refrigerant-134a vapor is contained in a frictionless piston-cylinder device at 240kPa. Now 300kJ of heat is transferred to the refrigerant at constant pressure while a 110V source supplies current to a resistor within the cylinder for 6minutes. Determine the current supplied if the final temperature is 70C. Also, show the process on a T-v diagram with respect to the saturation lines.