Figure P8.48 100 Ω 20 Ω 12 2 t = 0 300 V 2 mH 5 µF

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
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The switch in the circuit in (Figure 1) has been in position a for a long time. At t=0, the switch moves instantaneously to position b.

Pt A. What is the initial value of va?

Pt B. What is the initial value of dva/dt?

Pt C. What is the numerical expression for va(t) for t≥0?

Figure P8.48
100 Ω
20 Ω
12 2
t = 0
300 V
2 mH
5 µF
Transcribed Image Text:Figure P8.48 100 Ω 20 Ω 12 2 t = 0 300 V 2 mH 5 µF
-8000t
O -600e
cos(6000t) – 100e-8000t
sin(6000t)V
-8000t
O -300e-8000t
cos(6000t) – 100e
sin(6000t)V
-8000t
-8000t
O -300e
cos(6000t) – 200e
sin(6000t)V
O -300e-8000t
cos(6000t) + 200e-8000£
sin(6000t)V
-8000t
-8000t
O -600e
cos(6000t) + 200e
sin(6000t)V
-8000t
O -300e
cos(6000t) + 100e-8000t
sin(6000t)V
O -600e
-8000t
cos(6000t) – 200e
-8000t
sin(6000t)V
-8000t
O -600e
cos(6000t) + 100e-8000t
sin(6000t)V
Transcribed Image Text:-8000t O -600e cos(6000t) – 100e-8000t sin(6000t)V -8000t O -300e-8000t cos(6000t) – 100e sin(6000t)V -8000t -8000t O -300e cos(6000t) – 200e sin(6000t)V O -300e-8000t cos(6000t) + 200e-8000£ sin(6000t)V -8000t -8000t O -600e cos(6000t) + 200e sin(6000t)V -8000t O -300e cos(6000t) + 100e-8000t sin(6000t)V O -600e -8000t cos(6000t) – 200e -8000t sin(6000t)V -8000t O -600e cos(6000t) + 100e-8000t sin(6000t)V
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