EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Question
Chapter 30, Problem 29P
(a)
To determine
The resonant frequency of the oscillation.
(b)
To determine
The peak value of the current.
(c)
To determine
The maximum energy stored in the inductor.
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(II) A 550-loop circular armature coil with a diameter of8.0 cm rotates at 120 rev/s in a uniform magnetic field ofstrength 0.55 T. (a) What is the rms voltage output of thegenerator? (b) What would you do to the rotation frequency in order to double the rms voltage output?
(III) A 2200-pF capacitor is charged to 120 V and thenquickly connected to an inductor. The frequency of oscillation is observed to be 19 kHz. Determine (a) the inductance,(b) the peak value of the current, and (c) the maximumenergy stored in the magnetic field of the inductor.
(III) A physics professor wants to demonstrate the large sizeof the henry unit. On the outside of a 12-cm-diameter plastichollow tube, she wants to wind an air-filled solenoid withself-inductance of 1.0 H using copper wire with a 0.81-mmdiameter. The solenoid is to be tightly wound with each turntouching its neighbor (the wire has a thin insulating layeron its surface so the neighboring turns are not in electricalcontact). How long will the plastic tube need to be and howmany kilometers of copper wire will be required? What willbe the resistance of this solenoid?
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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- Suppose that a rectangular toroid has 2000 windings and a self-inductance of 0.040 H. If h = 0.10 m, what is the current flowing through a rectangular toroid when the energy in its magnetic field is 2.0 × 10-6 J?arrow_forwardCheck Your Understanding How much energy is stored in the inductor of Example 14.2 after the current reaches its maximum value?arrow_forwardCan there be an induced emf in a circuit at an instant when the magnetic flux through the circuit is zero?arrow_forward
- A 10-H inductor carries a current of 20 A. How much ice at 0ºC could be melted by the energy stored in the magnetic field of the inductor? (Hint: Use the value Lf= 334 J/g for ice.)arrow_forwardFigure 23.59 A coil is moved into and out of a region of uniform magnetic field. A coil is moved through a magnetic field as shown in Figure 23.59. The field is uniform inside the rectangle and zero outside. What is the direction of the induced current and what is the direction of the magnetic force on the coil at each position shown?arrow_forwardCheck Your understanding Suppose that the coil of Example 13.2 is a square rather than circular. Can Equation 13.12 be used to calculate (a) the induced emf and (b) the induced electric field? =EdI=dmdt13.12arrow_forward
- Suppose that a cylindrical solenoid is wrapped around a core of iron whose magnetic susceptibility is x. Using Equation 14.9, show that the self-inductance of the solenoid is given by L=(l+x)+0n2Al where l is its length, A its cross-sectional area and N its total number of turns. Nm=Uarrow_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_forwardIs Ampere’s law valid for all closed paths? Why isn’t it normally useful for calculating a magnetic field?arrow_forward
- 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_forwardDoes the induced emf always act to decrease the magnetic flux through a circuit?arrow_forwardIn the circuit sho in the accompanying figure, the rtd slides along the conducting rails at a constant VelOCity v. The velocity is in the same plane as the rails and directed at an angle 6 to them. A uniform magnetic field Bis directed out of the page. What is the emf induced in the r?arrow_forward
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