College Physics
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ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Transcribed Image Text:An LC circuit consists of an inductor and capacitor
connected to each other in a
single loop with no power supply present. The
capacitor is initially fully charged at
t = 0 when the switch is closed. Assume an ideal
situation where there is no
resistance to take into account.
a) If the capacitance is 470 µF and the total energy
of the system is 250 mJ, what
must the resistance be?
b) What is the period of the oscillations that ensue?
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- A series circuit consists of a resistor with R = 20 02, an inductor with L = 1 H, a capacitor with C = 0.01 F, and a 18-volt battery. If the initial charge and current are initially both 0, find the charge and current at time t. charge current Q(t) = I(t)= 18te 10t Xarrow_forwardIn a DC circuit, at t=infinity, an inductor appears to be a(n) ________ circuit. In an RL circuit, where the inductor is initially uncharged, the initial current is _________ amps.arrow_forwardAn RLC circuit consists of a 1.34 2 resistor, a 8.44 nF capacitor, and a 5.55 mH inductor. Initially, the voltage across the capacitor is 1.46 V, and no current is flowing in the circuit. How many oscillations occur as the charge amplitude on the capacitor decays to 67.4% of its initial value? It is acceptable to let w' = w. i oscillations (include decimals if needed to keep the appropriate number of significant digits in your answer)arrow_forward
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- In a standard RLC circuit that we are looking at R = 0.075 Ω , L = 1.2 H and C = 1.6 F. The initial charge carries by the capacitor is Q0 = 0.045 C. The switch is closed at time t = 0. Calculate the value of Q, in coulombs, at time t = 1s.arrow_forwardIn a home stereo system, low sound frequencies are handled by large "woofer" speakers, and high frequencies by smaller "tweeter" speakers. For the best sound reproduction, low-frequency currents from the amplifier should not reach the tweeter. One way to do this is to place a capacitor in series with the 9.0 Ω resistance of the tweeter; one then has an RLC circuit with no inductor L (that is, an RLC circuit with L = 0). What value of C should be chosen so that the current through the tweeter at 200 Hz is half its value at very high frequencies?arrow_forward
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