Practice Problem 21.13 Part A - Practice Problem: Let's apply i = (E/R)(1 - e-(R/L):) to a specific R-L circuit. In (Figure 1 ), suppose & = 120 V, R = 200 $2, and L = 10.0 H. Find (a) the final current after the switch has been closed a long time, (b) the initial time rate Suppose we now want the final current to be 0.308 A , with & and 7 keeping the same values. What value of R should be used? of change of the current, immediately after the switch has been closed, and Express your answer in ohms. (c) the time at which the current has reached 63.2% of its final value. DAI AEd 0 : ? n Submit Previous Answers Request Answer X Incorrect; Try Again; 6 attempts remaining Part B - Practice Problem: What value of L should be used? Figure Express your answer in henrys. IVO AEd 0 ] ? + LE L = H Submit Previous Answers Request Answer R L 0000 X Incorrect; Try Again; 7 attempts remaining Provide Feedback