1. The problem statement, all variables and given/known data 240V,50 Hz electrical appliance is rated at 2KW and has a lagging power factor of0.7. a)Determine the appliance's power factor when it is used on a 60Hz supply? b)Calculate the supply voltage required to maintain the appliance at its rated power when operated off a 60Hz supply? 2. Relevant equations p.f.=P/S S^2=P^2+Q^2 to obtain Q S=VsI to obtain I Z=Vs/I to obtain Z p.f. = R/Z to obtain R Z^2=R^2+Xl^2 to obtain Xl Xl=2pifL to obtain L at 50Hz 3. The attempt at a solution I have done the above then used the value for L in Xl=2pifL at 60 Hz but not sure were to go from here.