Question

In the circuit in (Figure 1) the voltage and current expressions are 60e -25t V, t > 0); i 20e -25t mA, t> 0+. V = Figure 1 of 1 + V R RS

Answer 1

Vivo) e the كم (منذ = (ل Solution standard (t) and itt) for Rc Ciranit shown below where, vel = Initial voltage of Capacitor the i(o)=Initial current of circuit Comparing with giren gehoud equation, T= time constant vo)- 60v i() = 20mA £=25 IT=0.04 dec Part A i(o)= Vo) R R= Vo) ilo) 60 IR =3R part-B T=0.04 RC = 0.04 c = 0.04 3 = 13.333 feet) ZO As, parte T=0.04 sec IT=40 mdec) part-D Snitial energy stored (wo) = 2 c Evo = 2X13:333 603x406 = 24X103 Joule (0) Wo = 24 m J)

-SOX75X403 part-E t Weiss V(A) o ilt) Lt t xo3 at во е = x202254 t LA 1.2 e sot a sot, t 1.2 - e -50 - sot I-1-2 Waiss for t=75ms leso So =75x1035 Whiss 1.2 so 1) Waiss=0.02343 Joule to Whiss = 23.4.355 1 de (my)