A charged capacitor is connected to a closed circuit with one large capacitor. If the capacitor was initially charged to maximum voltage, what percentage of the voltage remains after 1 time constant of discharge time? A. B. C. D. 63.4% 5.0% 15.0% 36.6%

A charged capacitor is connected to a closed circuit with one large capacitor. If the capacitor was initially charged to maximum voltage, what percentage of the voltage remains after 1 time constant of discharge time? A. B. C. D. 63.4% 5.0% 15.0% 36.6%

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A series combination of a 45,000 Ohm resistor and an unknown capacitor is connected to a 15 V battery. Once second after the circuit is completed, the voltage across the capacitor is 8 V. a. Determine the capacitance of the capacitor. b. What is the voltage across the capacitor 2 seconds after the circuit is completed?
Q1: A capacitor in a single - loop RC circuit is charged to 75% of its maximum charge in A seconds. What is the time constant for this circuit? A=4.575
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4. You can easily find the time constant if you are given a graph of voltage across a discharging capacitor as a function of time. When t = Tc = RC, the voltage across the capacitor is AV (t = Tc) = AV, e¹≈ 0.37 AV Therefore the time constant is just how long it takes for AV (t) to reach 37% of its initial value. The graph shows the voltage across a discharging 0.2 μF capacitor as a function of time. Use the following steps to determine the resistance. a. What is 37% of the initial voltage? 21 b. How long does it take (after discharge starts) for the voltage to reach 37% of the initial voltage? This time is equal to the time constant. c. Use your time constant from (b) to determine the resistance. AV (Volts) 2 1.5 0.5 %40 80 120 160 time (milli-sec)
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d. Would adding a stronger dielectric to the capacitor in a charging RC circuit increase, decrease, or not change its time constant?
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Activity 3 Letter g
*Chapter 32, Problem 018 GO Your answer is partially correct. Try again. The circuit in the figure consists of switch S, a 4.60 V ideal battery, a 25.0 MN resistor, and an airfilled capacitor. The capacitor has parallel circular plates of radius 5.30 cm, separated by 4.00 mm. At time t = 0, switch S is closed to begin charging the capacitor. The electric field between the plates is uniform. At t = 260 us, what is the magnitude of the magnetic field within the capacitor, at radial distance 2.50 cm? R Units Number [0.000000000000384
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