Question

S i Cauze: 205 ELEN220 ACE ir paf X C SSE Assignment 3m7raat: 1.find and win the foloxing + v > file://cyUsers/car/ApaData/local/Faccages, Vicent Microsoft Edgn bunkyndibbwc/CompState/Dawnload/HW292079420411.pdf Seurakkul S Cl Corrw.com Walk! Toich - + mi to poc Prav om al . # HW 7 cont. (Due next class) 3. Determine i, in, and , for all / in the circuit shown below. Assume that the switch was closed for a long time. It should be noted that opening a switch in scrics with an ideal current source creates an infinite voltage at the current source terminals. Clearly this is impossible. For the purposes of problem solving, we can place a shunt resistor in parallel with the source (which now makes it a voltage source in series with a resistor). In more practical circuits, devices that act like current sources are, for the most part, electronic circuits. These circuits will allow the source to act like an ideal current source over its operating range but voltage-limit it when the load resistor becomes too large (as in an open circuit). 32 11 no 24 A 49 292 1941- Tucca 2100 1/26/2020 ELEN 220 Lecture 03 Spring 2020

Answer 1

30 S vo 2.0 24 17 413 Switch is opened at t:o. The circuit hit when is closed at to il., to will be when is close 34 TH 24A A an? 12 since However the switch remained closed for longtime, the for DC sources Hence Circuit induttor acts as short actual Circuit tor to is * at to: 32 21 24A dans 253 ivo

curent dintison vele applics. in(o) (24 ) x 2 icol 24x a 244 ilo) , 16A Volo): ilo) x2 2 16 x 2 Volo) 32v across inductor after switch us closed, cament * Immediately it remains as Cannot change abruptly , hence ilo). IGA ie, (o), i lot) , IGA

At trot: 30 icot -64 412 Circuit can be modified as io), ibi Color 14 342 323 dolar Since inducter acts as constant current source Eslot) ilot) x 3 3+4+2 islot) 4.8A

16 (07) - ilox2 No(01) -9.64 Far t>o This is Circuit a source free RL tience circuit the coments sential with time constant, in the circuit exponential cu thea Req= (30) 11 (442) 3x6 376 326 Rea 220 Current through inductor is itt) ilot) e the ilt) 16 *

Cument through resister is oltz islot) e the iot) - 4.80 2t A Vo Hage across aut resis Voltle 16 (ot) e te | Volt) - q.be 2t v