(a) Refer to the circuit as in Figure Q1(a), a switch has been in position A for a long time and moved to position B at time t-0s. (i) State the type of response of the circuit (ii) Find the expression for capacitance voltage, V at all times B t=Os 40u(t) 6Ω 0.25F 60. Figure Q1(a) (iii) Suggest a new capacitor value for the circuit in Figure Q4(a) without changing all resistance values in order to achieve the voltage v(3)=15V.

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QUESTION 1
(а)
Refer to the circuit as in Figure Q1(a), a switch has been in position A for a long time
and moved to position B at time t-0s.
(i)
State the type of response of the circuit
(ii)
Find the expression for capacitance voltage, V at all times
B
A
t=0s
40u(t)
6Ω
0.25F
6Ω
Figure Q1(a)
(iii)
Suggest a new capacitor value for the circuit in Figure Q4(a) without changing
all resistance values in order to achieve the voltage v(3)-15V.
(b)
A switch in the circuit as in Figure Q1(b) below has been open for a long time and closed
at time t=0s. Determine the general equation for current, i when t>0s.
102
t = 0
i2
30V
2H
1/100F:
V
10u(-t)
Figure Q1(b)
>
Transcribed Image Text:QUESTION 1 (а) Refer to the circuit as in Figure Q1(a), a switch has been in position A for a long time and moved to position B at time t-0s. (i) State the type of response of the circuit (ii) Find the expression for capacitance voltage, V at all times B A t=0s 40u(t) 6Ω 0.25F 6Ω Figure Q1(a) (iii) Suggest a new capacitor value for the circuit in Figure Q4(a) without changing all resistance values in order to achieve the voltage v(3)-15V. (b) A switch in the circuit as in Figure Q1(b) below has been open for a long time and closed at time t=0s. Determine the general equation for current, i when t>0s. 102 t = 0 i2 30V 2H 1/100F: V 10u(-t) Figure Q1(b) >
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