An L-R-C series circuit has L = 0.400 H, C = 7.00 μF, and R = 370 2. At t = 0 the current is zero and the initial charge on the capacitor is 2.80 x 10-4 C. Part A What is the values of the constant A in the followin equation? R2 9-Ae (R/2L) cos(LC AL t+) Express your answer to three significant figures and include the appropriate units. A = Value C ? X.10" Submit Previous Answers Request Answer × Incorrect; Try Again; One attempt remaining Part B What is the value of the constant ? Express your answer in radians to three significant figures. An L-R-C series circuit has L = 0.400 H, C = 7.00 μF, and R=370 . At t = 0 the current is zero and the initial charge on the capacitor is 2.80 x 10-1 C. Part C How much time does it take for each complete current oscillation after the switch in this circuit is closed? Express your answer to three significant figures and include the appropriate units. t = Value Submit Request Answer ? Units Part D What is the charge on the capacitor after the first complete current oscillation? Express your answer to three significant figures and include the appropriate units. 9= Value Submit Request Answer ? Units

An L-R-C series circuit has L = 0.400 H, C = 7.00 μF, and R = 370 2. At t = 0 the current is zero and the initial charge on the capacitor is 2.80 x 10-4 C. Part A What is the values of the constant A in the followin equation? R2 9-Ae (R/2L) cos(LC AL t+) Express your answer to three significant figures and include the appropriate units. A = Value C ? X.10" Submit Previous Answers Request Answer × Incorrect; Try Again; One attempt remaining Part B What is the value of the constant ? Express your answer in radians to three significant figures. An L-R-C series circuit has L = 0.400 H, C = 7.00 μF, and R=370 . At t = 0 the current is zero and the initial charge on the capacitor is 2.80 x 10-1 C. Part C How much time does it take for each complete current oscillation after the switch in this circuit is closed? Express your answer to three significant figures and include the appropriate units. t = Value Submit Request Answer ? Units Part D What is the charge on the capacitor after the first complete current oscillation? Express your answer to three significant figures and include the appropriate units. 9= Value Submit Request Answer ? Units

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter29: Direct Current (dc) Circuits

Section: Chapter Questions

Problem 60PQ: Figure P29.60 shows a simple RC circuit with a 2.50-F capacitor, a 3.50-M resistor, a 9.00-V emf,...

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Figure P29.84 shows a circuit that consists of two identical emf devices. If R1 = R2 = R and the switch is closed, find an expression (in terms of R and ) for the current I that is in the branch from point a to b.
In this chapter, most examples and problems involved direct current (DC). DC circuits have the current flowing in one direction, from positive to negative. When the current was changing, it was changed linearly from I=ImaxtoI=+Imax and the voltage changed linearly from V=Vmax to V=+Vmax where Vmax=ImaxR .Suppose a voltage source is placed in series with a resistor of R = 10 that supplied a current that alternated as a sine wave, for example, I(t)=(3.00A)sin(24.00st) . (a) What would a graph of the voltage drop across the resistor V(t) versus time look like? (b) What would a plot of V(t) versus I(t) for one period look like? (Hint: If you are not sure, try plotting V(t) versus I(t) using a spreadsheet.)
In an oscillating RLC circuit, R = 7.0 L. = 10 mH. And C = 3.0 F. Initially, the capacitor has a charge of 8.0 C and the current is zero. Calculate the charge on the capacitor (a) five cycles later and (b) 50 cycles later.
(a) What is the resistance of a light bulb that uses an average power of 75.0 W when connected to a 60.0-Hz power source having a maximum voltage of 170. V? (b) What is the resistance of a 100.-W lightbulb?
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 1.83 102.2
(a) What is the resistance of a 220-V AC short circuit that generates a peak power of 96.8 kW? (b) What would the average power be if the average power be if the voltage was 120 V AC?
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