32-3 In Fig.32-A, switch S, is closed while switch S, is kept open. The inductance is _ =0.115 H, and the resistance is R = 120 0. (a) When the current has reached its final value, the energy stored in the inductor is 0.260 J. What is the emf & of the battery? (b) After the current has reached its final value, S, is opened and S, is closed. How much time does it take for the energy stored in the inductor to decrease to 0.130 J, half the origi- nal value? Figure 32-A E Closing switch S, connects the R-L combination in series with a source of emf E. S1 9000 R L Sz Closing switch S2 while opening switch S, disconnects the combination from the source