For the circuit and current waveform given in example 2 of lecture video 11, find the energy delivered by the source for all time. Solution Ws(t)=Wr(t)+WL(t) eneregy lost in a resistor=i^2*R*t=1*i^2t=i^2t energy stored in a inductor= (Li^2)/2=(i^2)/2. energy delivered by the source=i^2t+(i^2)/2..