EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Chapter 30, Problem 28P
(a)
To determine
The charge
(b)
To determine
The circuit for the initial conditions.
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(p)
It is necessary to find the value of R from a switched circuit. The function
becomes
R
f(R)= e-RlhL,
cos
LC
;Assunme charge
must
be
2L
dissipated to 1% of its original values
= 0.01 in time t 0.05 sec
with L= 5H and C = 10- F. Use false position method.
(i) At an instant of time during the oscillations of an LC circuit, the current is at its maximum value. At this instant, what happens to the voltage across the capacitor?
(a) It is different from that across the inductor.
(b) It is zero.
(c) It has its maximum value.
(d) It is impossible to determine.
(ii) Now consider an instant when the current is momentarily zero. From the same choices, describe the magnitude of the voltage across the capacitor at this instant.
(I) Determine the inductance L of a 0.60-m-long air-filledsolenoid 2.9 cm in diameter containing 8500 loops
Chapter 30 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 30 - Prob. 1QCh. 30 - Prob. 2QCh. 30 - Prob. 3QCh. 30 - Prob. 4QCh. 30 - If you are given a fixed length of wire, how would...Ch. 30 - Prob. 6QCh. 30 - Prob. 7QCh. 30 - Prob. 8QCh. 30 - What keeps an LC circuit oscillating even after...Ch. 30 - In an ac LRC circuit, if XL XC, the circuit is...
Ch. 30 - Prob. 13QCh. 30 - Under what conditions is the impedance in an LRC...Ch. 30 - Is it possible for the instantaneous power output...Ch. 30 - In an ac LRC circuit, does the power factor, cos,...Ch. 30 - Describe briefly how the frequency of the source...Ch. 30 - Prob. 18QCh. 30 - In an LRC circuit, the current and the voltage in...Ch. 30 - Compare the oscillations or an LRC circuit to the...Ch. 30 - Prob. 4PCh. 30 - Prob. 28PCh. 30 - Prob. 29PCh. 30 - Prob. 30PCh. 30 - (II) (a) What is the rms current in a series LR...Ch. 30 - (I) What is the resonant frequency of the LRC...Ch. 30 - At time t = 0, the switch in the circuit shown in...Ch. 30 - Prob. 70GPCh. 30 - Show that the fraction of electromagnetic energy...
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- In Figure 14.12, =12V , L = 20 mH, and R=5.0. Determine (a) the time constant of the circuit, (b) the initial current through the resistor, (C) the final current through the resistor, (d) the current through the resistor when t=2L , and (e) the voltages across the inductor and the resistor when t=2L .arrow_forwardCan the instantaneous power output of an ac source ever be negative? Can the average power output be negative?arrow_forwardIf emf of the battery of Figure 14.12(b) is reduced by a factor of 2, by how much does the steady-state energy stored in the magnetic field of the inductor change?arrow_forward
- Show that and dm/dt have the same units.arrow_forwardCheck Your Understanding How much energy is stored in the inductor of Example 14.2 after the current reaches its maximum value?arrow_forwardIn an oscillating RLC circuit with L = 10 mH, C = 1.5 F , and R = 2.0 , how much time elapses before the amplitude of the oscillations drops to half its initial value?arrow_forward
- Can there be an induced emf in a circuit at an instant when the magnetic flux through the circuit is zero?arrow_forward(I) What is the reactance of a 6.20μ F capacitor at a frequency of (a) 60.0 Hz, (b) 1.00 MHz?arrow_forward(I) How many turns of wire would be required to make a130-mH inductor out of a 30.0-cm-long air-filled solenoidwith a diameter of 5.8 cm?arrow_forward
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