The resistance of an electrical toaster has a temperature dependence given by R(T)=R0[1+α(T−T0)] in its range of operation. At T0=300K,R=100Ωand atT=500K,R=120Ω. The toaster is connected to a voltage source at 200V and its temperature is raised at a constant rate from 300 to 500K in 30s. The total work done in raising the temperature is