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- A circuit contains a D cell battery, a switch, a 20- resistor, and four 20-mF capacitors connected in series, (a) What is the equivalent capacitance of the circuit? (b) What is the fiC time constant? (c) How long before the current decreases to 50% of the initial value once the switch is closed?The circuit shown in Figure P28.78 is set up in the laboratory to measure an unknown capacitance C in series with a resistance R = 10.0 M powered by a battery whose emf is 6.19 V. The data given in the table are the measured voltages across the capacitor as a function of lime, where t = 0 represents the instant at which the switch is thrown to position b. (a) Construct a graph of In (/v) versus I and perform a linear least-squares fit to the data, (b) From the slope of your graph, obtain a value for the time constant of the circuit and a value for the capacitance. v(V) t(s) In (/v) 6.19 0 5.56 4.87 4.93 11.1 4.34 19.4 3.72 30.8 3.09 46.6 2.47 67.3 1.83 102.2w- 202 Figure Q13 Q14. Obtain the equivalent resistance at the terminals a-b for the circuit in Figure Q14. ao 102 $202 30 Ωξ 10Ω 10Ω 202 bo Figure Q14
- d%3D8501&page%3D17 ng szolgáltatások Nana Aber An RC circuit without a battery contains a 239.0 kN resistor and a fully charged capacitor that holds 115.0 µC charge at 50.0 V voltage. How much charge remains on the capacitor 100.0 ms after closing the switch in uC ? Watch out for the units! of +Q "Te Answer: Ņext page15. What is the current for the circuit shown? R13 5Ω R17 10 Ω + V2 12 V R16 25 Ω + V1 12 V R15 15 Q ww R14 -20 Q Show your work... wwwwww wwww W R10 30 Ω R11 35 Ω R12 40 ΩA heart pacemaker fires exactly 69 times a minute. Each time it fires, a 35.0 nF capacitor is charged by a battery in series with a a resistor to 0.532 of its full voltage. What is the value of the resistance R? R= 24.9 Incorrect Ω
- 19. The switch S in the figure below has been closed long enough to ensure that the capacitor is fully charged. The switch is now opened at time t = 0. What is the voltage across the capacitor after 0.18 s? A. 1.84 V S B. 0.27 V C. 3.20 V D. 4.56 V E. 7.21 V 9.00 V 12.0 ΚΩ ww R = 15.0 ΚΩ 10.0 με 3.00 ΚΩ82. Switch S in is closed at time t 0, to begin charging an initially uncharged capacitance C= 15.0 µF through a resistor of resistance R 20.0 2. At what time is the potential across the capacitor equal to that across the resistor? ww сарасitor of C. %3D29. || Find the current through and the potential difference across each resistor in Figure P23.29. FIGURE P23.29 10 V 5.0 Ω ww ww 5.0 Ω ww 10 Ω ww 5.0 Ω
- For the series-parallel network c) find the magnitude of voltage Vab- R2 R6 5Ω 13 60 V ab R3 R7 a 4 0 Rg' R 10 0 80 V R4 = 40 8Ω R$ 2Ω %3D O a. 14 V O b.9 V Oc. 40 V O d. 80 Ve12q8 Hi, I need help visualizing graphs for this diagram: Abasic switch, two voltmeters and an ammeter. Initially the capacitor is either partially or fully charged, and the switch is open. switch is moved to position "b" allowing the capacitor start discharging. 1. Draw graph that represents the current measured with the ammeter as a function of time: 2. Draw graph that represents the magnitude of the voltage measured across the capacitor by the voltmeter labeled VC 3. Draw graoh that represents the magnitude of the voltage measured across the resistor by the voltmeter labeled VR Thank you!15. What is the current for the circuit shown? www R13 5Q R17 10 Ω + V2 12 V R16 25 Q ⒸVV. + V1 12 V R15 15 Q ww R14 -20 Q Show your work... wwwwww wwwww R10 30 Ω R11 35 Q R12 40 Q Z
