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1. Apr 22, 2010

Nasoomah

1. For the circuit of Figure 1, VT = 100 V, R = 5000 Ω and C = 400 μF; switch S is closed at t = 0.
a) Determine the instantaneous power absorbed by the capacitance.
b) Obtain an expression for the instantaneous power dissipated in the resistance.
c) Determine the voltage across the capacitor at time t = 1.39 s.

A 75-Ω resistance is connected in parallel with a 10-μF capacitance. Determine an equivalent series RC circuit such that the two circuits have the same impedance at an angular frequency of 1000 rad/s.
If a voltage source is connected to the parallel RC circuit as shown in Figure 2, determine the maximum energy absorbed by the capacitor.

Figure 2
Explain the graph for energy absorbed and released from a capacitor in the circuit in Figure 2.

q3: Replace the network of Figure 3 to the left of terminals ab by its Thevenin’s equivalent

q4:
For the circuit given in Figure 4, for t > 0, determine the inductor current〖 i〗_L (t).

the figure in the attachments

Last edited: Apr 22, 2010
2. Apr 22, 2010

tiny-tim

Welcome to PF!

Hi Nasoomah! Welcome to PF!
erm what attachments?

3. May 2, 2010

Nasoomah

[QUOTE=Nasoomah;2683904]1. For the circuit of Figure 1, VT = 100 V, R = 5000 Ω and C = 400 μF; switch S is closed at t = 0.
a) Determine the instantaneous power absorbed by the capacitance.
b) Obtain an expression for the instantaneous power dissipated in the resistance.
c) Determine the voltage across the capacitor at time t = 1.39 s.

A 75-Ω resistance is connected in parallel with a 10-μF capacitance. Determine an equivalent series RC circuit such that the two circuits have the same impedance at an angular frequency of 1000 rad/s.
If a voltage source is connected to the parallel RC circuit as shown in Figure 2, determine the maximum energy absorbed by the capacitor.

Figure 2
Explain the graph for energy absorbed and released from a capacitor in the circuit in Figure 2.

q3: Replace the network of Figure 3 to the left of terminals ab by its Thevenin’s equivalent

q4:
For the circuit given in Figure 4, for t > 0, determine the inductor current〖 i〗_L (t).

the figure in the attachments[/QUOTE]