Question

QUESTION 7 [10 marks] For the circuit below, find an expression for io(t) for t>0 and plot i,(t) on the graph below. Clearly mark the units and scale on the x- and y-axes, and show the initial value of i,(t) before the switch is closed 3k ) 1kQ 250HF x 20V 6k2 t=0

QUESTION

6

[10

marks]

F

or the circuit below,

a) [5 marks] Fin

d the current phasor

I

x

using superposition.

b) [3 marks] Verify your answer in part a) using nodal or mesh analysis.

c) [2 marks] Gi

ven the frequency

!

=

2

!"#

/

!"#

,

write

the corresponding

values for elements

R, L, C, and

the

expressions for source

s

v

x

(t)

and

i

y

(t)

on the diagram below.

Answer 1

Step co) Stork oa opevel -foG long period aud gefs ope ne At to fully caged tue Capaci Voltage devide vulr W Veco) 12 V Afte veC Coutaut time (Vadhiul VeC4) fival -2 (2.e 12.e -2t - 12 e -2t - 6.e 2e 2t- 6mA

If you have any doubts please comment

Thank you