Question

Example 4.8 • Use step by step approach to find i, for t> 0 6k 262 100 uF

Answer 1

* Given the circuit 6ku bkn MM 12 kv Xt=0 (t=0 Toouf 12V caseli); for tzo, the switch has open bor a long time, there capacitor acts as open circuit, then the circuit is shown in below.vn GLA - okn 312k 12V . According to voltaze division rule Ve(0)= 12x12 6+6+12 = 6V 1 .: V10-)=6V

caselin); at t=0, the switch suddenly closed, liere capcuitor does not allow sudden change of voltase .Velo) - V(O)= 6V. care(i); for txo, the switch has been closed position. Then the circuit is shown in below. R okul bkn not Live 12 km coour 0120 Time constant(o): heq C. find Regi- 6kl M2 12K/ heq = 6X12 = 4 kr 6+12

1. (козхоо хто 6 с ч оо кіо 3 Sec 20-бес . :. Ve): у 100 евт е бе –*/%. с (6e-2-se) и (о» + >0. с. Со€). — v. €) 6xto3 2 – 6 е-2.se 6 Yo3 =(- e-2.sh) mA bw ->б.