EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Chapter 30, Problem 3Q
To determine
Two coils with mutual inductance also have self-inductance.
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if coil 2 is turned 90 so that its axis is vertical, does the mutual inductance increase or decrease? Explain.
When the current through a large inductor is interrupted with a switch, an arc appears across the open terminals of the switch. Explain.
Two identical, closely wound, circular coils, each having selfinductance L, are placed next to each other, so that they are coaxial and almost touching. If they are connected in series, what is the selfinductance of the combination? What if they are connected in parallel? Can they be connected so that the total inductance is zero? Explain
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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- The self-inductance of a coil is zero if there is no current passing through the windings. True or false?arrow_forwardWhen the current through a large inductor is interrupted with a switch, an are appears across the open terminals of the switch. Explain.arrow_forwardAn emf of 0.40 V is induced across a coil when the current through it changes uniformly from 0.10 to 0.60 A in 0.30 s. What is the self-inductance of the coil?arrow_forward
- A device is turned on and 3.00 A flows through it 0.100 ms later. What is the self-inductance of the device if an induced 150 V emf opposes this?arrow_forwardStarting with emf2=MI1t, show that the units of inductance are (Vs)/A=s.arrow_forwardA 120-V, series-wound dc motor draws 0.50 A from its power source when operating at full speed, and it draws 2.0 A when it starts. The resistance of the armature coils is 10 , (a) What is the resistance of the field coils? (b) What is tire back emf of the motor when it is running at full speed? (c) The motor operates at a different speed and draws 1.0 A from the source. What is the back emf in this case?arrow_forward
- What is the resonant frequency of a 0.500 mH inductor connected to a 40.0 (F capacitor?arrow_forwardA 600-turn solenoid is 0.55 m long and 4.2 cm in diameter. Inside the solenoid, a small (1.1 cm × 1.4 cm), single-turn rectangular coil is fixed in place with its face perpendicular to the long axis of the solenoid. What is the mutual inductance of this system?arrow_forwardWhat happens to the amplitude of the induced emf when the rate of rotation of a generator coil is doubled? (a) It becomes four times larger. (b) It becomes two times larger. (c) It is unchanged. (d) It becomes one-hall as large. (e) It becomes one-fourth as large.arrow_forward
- The self-inductance of a coil is zero if there is no current passing through the windings. True or false?arrow_forwardA 2H inductor is in series with two 4H inductors that are in parallel with each other. The effective inductance is a.) 4H b.) 8/5 H c.) 2H 1.) 5/8 Harrow_forwardSuppose there is a steady current in an inductor. If you attempt to reduce the current to zero instantaneously by quickly opening a switch, an arc can appear at the switch contacts. Why? Is it physically possible to stop the current instantaneously? Explain.arrow_forward
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