H.W 1.2: The switch in the circuit in figure 1.17 has been in the left position for a long time. At t = 0 it moves to the right position and stays there. a) Write the expression for the capacitor voltage, v(t) for t>0 b) Write the expression for the current through the 40k resistor, i(t) for t>0, 5 kN 40 kN 1 = 0 120 V 10 kN : 160 nF 25 kN §10 kN Figure 1.17

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H.W 1.2: The switch in the circuit in figure 1.17 has been in the left position for
a long time. Att = 0 it moves to the right position and stays there.
a) Write the expression for the capacitor voltage, v(t) for t>0
b) Write the expression for the current through the 40 k resistor, i(t) for t>0,
5 kN
40 k2
t = 0
120 V
10 kN
160 nF
$25 k
10 kN
Figure 1.17
Ans:
v(t) = (80e-375t) V,
t > 0,
i(t) = (1.6e-375t) mA,
t > 0
Transcribed Image Text:H.W 1.2: The switch in the circuit in figure 1.17 has been in the left position for a long time. Att = 0 it moves to the right position and stays there. a) Write the expression for the capacitor voltage, v(t) for t>0 b) Write the expression for the current through the 40 k resistor, i(t) for t>0, 5 kN 40 k2 t = 0 120 V 10 kN 160 nF $25 k 10 kN Figure 1.17 Ans: v(t) = (80e-375t) V, t > 0, i(t) = (1.6e-375t) mA, t > 0
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