EE 2120 Chapter : Prob1 23s1
Document Summary
P1. 23 displays the cumulative amount of charge q(t) that has exited a certain device up to time t. what is the current at: (a) t = 2 s (b) t = 6 s (c) t = 12 s q(t) Solution: (a) i = 0 @ t = 2 s (slope = 0 of rst segment). (b) i = 4 2 (c) 4 = 0. 5 a (slope of second segment). 8 4 = 2 i = dq dt d dt (4e 0. 2(t 8)) = 4e1. 6 d dt e 0. 2t = 4 0. 2e1. 6e 0. 2t. = 0. 36 a @ t = 12 s.
