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Q1 How is the initial current through a bulb affected by putting a capacitor in series in the circuit? Explain briefly.

Q1 How is the initial current through a bulb affected by putting a capacitor in series in the circuit? Explain briefly.

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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A Matter-and-Interactions.pdf - Adobe Acrobat Reader DC (32-bit) File Edit View Sign Window Help Home Tools Matter-and-Interac. x Sign In 794 (812 of 1030) 100% a praic vutsIuc a cIcuiar capacnor IS apprUAmatry Qy GIve a comprete vut orier expianation Tor uie venavior of the current during the discharging of a capacitor in a circuit consisting of a capacitor and light bulb. Include detailed diagrams. Explain, don't just describe. QIA GR A more extensive analysis shows that this trend holds true for the entire charging process: the capacitor with the narrower gap ends up with more charge on its plates. Q4 The insulating layer between the plates of a capacitor not only holds the plates apart to prevent conducting contact but also has a big effect on charging. Consider two capacitors whose only difference is that capacitor number 1 has nothing between the plates, while capacitor number 2 has a layer of plastic in the gap (Figure 19.57). They are placed in two different circuits having similar batteries and bulbs in series with the capacitor. Q10 Give a complete but brief explanation for the behavior of the current during the charging of a capacitor in a circuit consisting of batteries, bulb, and capacitor in series. Include detailed diagrams. Explain, don't just describe. Q11 Figure 19.58 shows three circuits labeled A, B, and C. All the thin-filament bulbs, capacitors, and batteries are identical and are like the equipment you used in class. The capacitors are initially uncharged. In each circuit the batteries are connected for a short time Tand then disconnected. The time T'is only 10% of the total charging time through a single thin-filament bulb, so that the bulb brightness doesn't change much during the time T. A Figure 19.57 Show that in the first fraction of a second the current stays more nearly constant (decreases less rapidly) in the circuit with capacitor number 2. Explain your reasoning in detail. Hint: Consider the electric fields produced in the nearby wires by this plastic-filled capacitor. Suppose that the plastic is replaced by a different plastic that polarizes more easily. In the same circuit, would this capacitor keep the current more nearly constant or less so than capacitor 2? Figure 19.58 (a) In which circuit (A, B, or C) does the capacitor now have the most charge? Explain. (b) In which circuit (A, B, or C) does Activate Windows Go to Settings to activate Windows. 6:45 PM P Type here to search PE 5/26/2021 近
Transcribed Image Text:A Matter-and-Interactions.pdf - Adobe Acrobat Reader DC (32-bit) File Edit View Sign Window Help Home Tools Matter-and-Interac. x Sign In 794 (812 of 1030) 100% a praic vutsIuc a cIcuiar capacnor IS apprUAmatry Qy GIve a comprete vut orier expianation Tor uie venavior of the current during the discharging of a capacitor in a circuit consisting of a capacitor and light bulb. Include detailed diagrams. Explain, don't just describe. QIA GR A more extensive analysis shows that this trend holds true for the entire charging process: the capacitor with the narrower gap ends up with more charge on its plates. Q4 The insulating layer between the plates of a capacitor not only holds the plates apart to prevent conducting contact but also has a big effect on charging. Consider two capacitors whose only difference is that capacitor number 1 has nothing between the plates, while capacitor number 2 has a layer of plastic in the gap (Figure 19.57). They are placed in two different circuits having similar batteries and bulbs in series with the capacitor. Q10 Give a complete but brief explanation for the behavior of the current during the charging of a capacitor in a circuit consisting of batteries, bulb, and capacitor in series. Include detailed diagrams. Explain, don't just describe. Q11 Figure 19.58 shows three circuits labeled A, B, and C. All the thin-filament bulbs, capacitors, and batteries are identical and are like the equipment you used in class. The capacitors are initially uncharged. In each circuit the batteries are connected for a short time Tand then disconnected. The time T'is only 10% of the total charging time through a single thin-filament bulb, so that the bulb brightness doesn't change much during the time T. A Figure 19.57 Show that in the first fraction of a second the current stays more nearly constant (decreases less rapidly) in the circuit with capacitor number 2. Explain your reasoning in detail. Hint: Consider the electric fields produced in the nearby wires by this plastic-filled capacitor. Suppose that the plastic is replaced by a different plastic that polarizes more easily. In the same circuit, would this capacitor keep the current more nearly constant or less so than capacitor 2? Figure 19.58 (a) In which circuit (A, B, or C) does the capacitor now have the most charge? Explain. (b) In which circuit (A, B, or C) does Activate Windows Go to Settings to activate Windows. 6:45 PM P Type here to search PE 5/26/2021 近
A Matter-and-Interactions.pdf - Adobe Acrobat Reader DC (32-bit) File Edit View Sign Window Help Home Tools Matter-and-Interac. x Sign In 794 (812 of 1030) 100% QUESTI ONS Q1 How is the initial current through a bulb affected by putting a capacitor in series in the circuit? Explain briefly. Q2 How is the charging time for a capacitor correlated with the initial current? That is, if the initial current is bigger, is the charging time longer, shorter, or the same? Explain briefly. Q3 Consider two capacitors whose only difference is that the plates of capacitor number 2 are closer together than those of capacitor number 1 (Figure 19.56). Neither capacitor has an insulating layer between the plates. They are placed in two different circuits having similar batteries and bulbs in series with the capacitor. A more extensive analysis shows that this trend holds true for the entire charging process: the capacitor containing an easily polarized insulator ends up with more charge on its plates. The capacitor you have been using is filled with an insulator that polarizes extremely easily. Q5 Suppose that instead of placing an insulating layer between the plates of the capacitor shown in Figure 19.57, you inserted a metal slab of the same thickness, just barely not touching the plates. In the same circuit, would this capacitor keep the current more nearly constant or less so than capacitor 2 in Question Q4? Explain why this is essentially equivalent to making a capacitor with a shorter distance between the plates. Q6 How does the final (equilibrium) charge on the capacitor plates depend on the particular resistor (for example, the kind of bulb or the length of Nichrome wire) in the circuit during charging? Explain briefly. Q7 How does the final (equilibrium) charge on the capacitor plates depend on the size of the capacitor plates? On the spacing between the capacitor plates? On the presence of a plastic slab between the plates? Q8 Researchers have developed an experimental capacitor that takes about eight hours (!) to discharge through a thin-filament bulb. They propose using this in electric cars to provide a burst of energy for emergency situations (it would be charged at a slow rate during normal driving). Describe in general terms the key design elements of this extraordinary capacitor. 1 Figure 19.56 Show that in the first fraction of a second the current stays more nearly constant (decreases less rapidly) in the circuit with capacitor number 2. Explain your reasoning in detail. Hint: Show charges on the metal plates, and consider the electric fields they produce in the nearby wires. Remember that the fringe field near a plate outside a circular capacitor is approximately Q9 Give a complete but brief explanation for the behavior of the current during the discharging of a capacitor in a circuit consisting of a capacitor and light bulb. Include detailed diagrams. Explain, don't just describe. O0 Civa complata hut briaf oxnlanati Activate Windows Go to Settings to activate Windows. Q/A A more extensive analvsis shows that this trend holds true for the for the bahavior 6:46 PM O Type here to search w 5/26/2021
Transcribed Image Text:A Matter-and-Interactions.pdf - Adobe Acrobat Reader DC (32-bit) File Edit View Sign Window Help Home Tools Matter-and-Interac. x Sign In 794 (812 of 1030) 100% QUESTI ONS Q1 How is the initial current through a bulb affected by putting a capacitor in series in the circuit? Explain briefly. Q2 How is the charging time for a capacitor correlated with the initial current? That is, if the initial current is bigger, is the charging time longer, shorter, or the same? Explain briefly. Q3 Consider two capacitors whose only difference is that the plates of capacitor number 2 are closer together than those of capacitor number 1 (Figure 19.56). Neither capacitor has an insulating layer between the plates. They are placed in two different circuits having similar batteries and bulbs in series with the capacitor. A more extensive analysis shows that this trend holds true for the entire charging process: the capacitor containing an easily polarized insulator ends up with more charge on its plates. The capacitor you have been using is filled with an insulator that polarizes extremely easily. Q5 Suppose that instead of placing an insulating layer between the plates of the capacitor shown in Figure 19.57, you inserted a metal slab of the same thickness, just barely not touching the plates. In the same circuit, would this capacitor keep the current more nearly constant or less so than capacitor 2 in Question Q4? Explain why this is essentially equivalent to making a capacitor with a shorter distance between the plates. Q6 How does the final (equilibrium) charge on the capacitor plates depend on the particular resistor (for example, the kind of bulb or the length of Nichrome wire) in the circuit during charging? Explain briefly. Q7 How does the final (equilibrium) charge on the capacitor plates depend on the size of the capacitor plates? On the spacing between the capacitor plates? On the presence of a plastic slab between the plates? Q8 Researchers have developed an experimental capacitor that takes about eight hours (!) to discharge through a thin-filament bulb. They propose using this in electric cars to provide a burst of energy for emergency situations (it would be charged at a slow rate during normal driving). Describe in general terms the key design elements of this extraordinary capacitor. 1 Figure 19.56 Show that in the first fraction of a second the current stays more nearly constant (decreases less rapidly) in the circuit with capacitor number 2. Explain your reasoning in detail. Hint: Show charges on the metal plates, and consider the electric fields they produce in the nearby wires. Remember that the fringe field near a plate outside a circular capacitor is approximately Q9 Give a complete but brief explanation for the behavior of the current during the discharging of a capacitor in a circuit consisting of a capacitor and light bulb. Include detailed diagrams. Explain, don't just describe. O0 Civa complata hut briaf oxnlanati Activate Windows Go to Settings to activate Windows. Q/A A more extensive analvsis shows that this trend holds true for the for the bahavior 6:46 PM O Type here to search w 5/26/2021
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