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2. (a) A capacitor C1 is connected in a DC circuit as shown in Figure 3. The supply voltage Vs=24Vdc, R1 = 1.5kN, C1 = 150µF and R2 = 8200. SW1 R1 R2 Vs C1 Figure 3 (i) The circuit in Figure 3 is initially de-energised. What happens after closing switch Sw1? (ii) Write down the equations to show how the current through C1 and the voltage across C1 change after closing switch SW1. (iii) What is the value of the current through R2 while SW1 is closed? (iv) After 5T, SW1 is opened. What is the current through SW1 while opening? +

2. (a) A capacitor C1 is connected in a DC circuit as shown in Figure 3. The supply voltage Vs=24Vdc, R1 = 1.5kN, C1 = 150µF and R2 = 8200. SW1 R1 R2 Vs C1 Figure 3 (i) The circuit in Figure 3 is initially de-energised. What happens after closing switch Sw1? (ii) Write down the equations to show how the current through C1 and the voltage across C1 change after closing switch SW1. (iii) What is the value of the current through R2 while SW1 is closed? (iv) After 5T, SW1 is opened. What is the current through SW1 while opening? +

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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2. (a) A capacitor C1 is connected in a DC circuit as shown in Figure 3. The supply voltage Vs=24Vdc, R1 = 1.5kN, C1 = 150µF and R2 = 8200. SW1 R1 R2 Vs C1 Figure 3 (i) The circuit in Figure 3 is initially de-energised. What happens after closing switch SW1? (ii) Write down the equations to show how the current through C1 and the voltage across C1 change after closing switch SW1. (iii) What is the value of the current through R2 while SW1 is closed? (iv) After 5T, Sw1 is opened. What is the current through SW1 while opening? (v) Describe how the circuit behaves when SW1 is opened? (vi) Write down the expressions to show how the current through C1, the voltage across C1 and the current through R2 change after opening SW1. (vii) Draw a graph to show how the current through C1, voltage across C1 and current through R2 change while operating SW1. (b) If an inductor was used instead of C1 in Figure 3, explain the importance of R2 and what could happen if R2 was not connected.
Transcribed Image Text:2. (a) A capacitor C1 is connected in a DC circuit as shown in Figure 3. The supply voltage Vs=24Vdc, R1 = 1.5kN, C1 = 150µF and R2 = 8200. SW1 R1 R2 Vs C1 Figure 3 (i) The circuit in Figure 3 is initially de-energised. What happens after closing switch SW1? (ii) Write down the equations to show how the current through C1 and the voltage across C1 change after closing switch SW1. (iii) What is the value of the current through R2 while SW1 is closed? (iv) After 5T, Sw1 is opened. What is the current through SW1 while opening? (v) Describe how the circuit behaves when SW1 is opened? (vi) Write down the expressions to show how the current through C1, the voltage across C1 and the current through R2 change after opening SW1. (vii) Draw a graph to show how the current through C1, voltage across C1 and current through R2 change while operating SW1. (b) If an inductor was used instead of C1 in Figure 3, explain the importance of R2 and what could happen if R2 was not connected.
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