Physics for Scientists and Engineers with Modern Physics

4th Edition

ISBN: 9780131495081

Author: Douglas C. Giancoli

Publisher: Addison-Wesley

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Textbook Question

Chapter 30, Problem 78GP

An electronic device needs to be protected against sudden surges in current. In particular, after the power is turned on the current should rise 10 no more than 7.5 mA in the first 75 μs. The device has resistance 150 Ω and is designed to operate at 33 mA. How would you protect this device?

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Chapter 30, Problem 77GP

Chapter 30, Problem 79GP

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Chapter 30 Solutions

Physics for Scientists and Engineers with Modern Physics

Ch. 30.1 - Prob. 1AE Ch. 30.1 - Prob. 1BE Ch. 30.3 - Prob. 1CE Ch. 30.4 - Show that L/R does have dimensions of lime. (See...Ch. 30.4 - Prob. 1EE Ch. 30.5 - Return to the Chapter-Opening Question, page 785,...Ch. 30.7 - At what frequency is the reactance of a 1.0-F...Ch. 30.7 - Prob. 1HE Ch. 30 - Prob. 1Q Ch. 30 - Prob. 2Q

Ch. 30 - Prob. 3Q Ch. 30 - Prob. 4Q Ch. 30 - If you are given a fixed length of wire, how would...Ch. 30 - Prob. 6Q Ch. 30 - Prob. 7Q Ch. 30 - Prob. 8Q Ch. 30 - What keeps an LC circuit oscillating even after...Ch. 30 - Is the ac current in the indicator always the same...Ch. 30 - Prob. 11Q Ch. 30 - In an ac LRC circuit, if XL XC, the circuit is...Ch. 30 - Prob. 13Q Ch. 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. 18Q Ch. 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. 1P Ch. 30 - Prob. 2P Ch. 30 - Prob. 3P Ch. 30 - Prob. 4P Ch. 30 - (I) If the current in a 280-mH coil changes...Ch. 30 - Prob. 6P Ch. 30 - Prob. 7P Ch. 30 - Prob. 8P Ch. 30 - Prob. 9P Ch. 30 - (II) If the outer conductor of a coaxial cable has...Ch. 30 - Prob. 11P Ch. 30 - Prob. 12P Ch. 30 - Prob. 13P Ch. 30 - (II) Ignoring any mutual inductance, what is the...Ch. 30 - (I) The magnetic field inside an air-filled...Ch. 30 - (I) Typical large values for electric and magnetic...Ch. 30 - (II) What is the energy density at the center of a...Ch. 30 - (II) Calculate the magnetic and electric energy...Ch. 30 - Prob. 19P Ch. 30 - (II) Determine the total energy stored per unit...Ch. 30 - (II) Determine the total energy stored per unit...Ch. 30 - Prob. 22P Ch. 30 - (II) How many time constants does it take for the...Ch. 30 - (II) It takes 2.56 ms for the current in an LR...Ch. 30 - Prob. 25P Ch. 30 - (II) In the circuit of Fig. 3027, determine the...Ch. 30 - Prob. 27P Ch. 30 - Prob. 28P Ch. 30 - (II) A 12-V battery has been connected to an LR...Ch. 30 - Prob. 30P Ch. 30 - (I) The variable capacitor in the tuner of an AM...Ch. 30 - Prob. 32P Ch. 30 - (II) In some experiments, short distances are...Ch. 30 - Prob. 34P Ch. 30 - Prob. 35P Ch. 30 - Prob. 36P Ch. 30 - Prob. 37P Ch. 30 - Prob. 38P Ch. 30 - (I) At what frequency will a 32.0-mH inductor have...Ch. 30 - (I) What is the reactance of a 9.2-F capacitor at...Ch. 30 - (I) Plot a graph of the reactance of a 1.0-F...Ch. 30 - (I) Calculate the reactance of, and rms current...Ch. 30 - (II) A resistor R is in parallel with a capacitor...Ch. 30 - Prob. 44P Ch. 30 - (II) (a) What is the reactance of a 0.086-F...Ch. 30 - Prob. 46P Ch. 30 - (II) A current I = 1.80 cos 377t (I in amps, t in...Ch. 30 - (I) A 10.0-k resistor is in series with a 26.0-mH...Ch. 30 - (I) A 75- resistor and a 6.8-F capacitor are...Ch. 30 - (I) For a 120-V, 60-Hz voltage, a current of 70 mA...Ch. 30 - (II) A 2.5-k resistor in series with a 420-mH...Ch. 30 - (II) (a) What is the rms current in a series RC...Ch. 30 - (II) An ac voltage source is connected in series...Ch. 30 - (II) Determine the total impedance, phase angle,...Ch. 30 - (II) (a) What is the rms current in a series LR...Ch. 30 - (II) A 35-mH inductor with 2.0- resistance is...Ch. 30 - (II) A 25-mH coil whose resistance is 0.80 is...Ch. 30 - (II) A 75-W lightbulb is designed to operate with...Ch. 30 - (II) In the LRC circuit or Fig. 3019, suppose I =...Ch. 30 - (II) An LRC series circuit with R = 150 , L = 25...Ch. 30 - (II) An LR circuit can be used as a phase shifter....Ch. 30 - (I) A 3800-pF capacitor is connected in series to...Ch. 30 - (I) What is the resonant frequency of the LRC...Ch. 30 - (II) An LRC circuit has L = 4.15 mH and R = 3.80...Ch. 30 - (II) The frequency of the ac voltage source (peak...Ch. 30 - (II) Capacitors made from piezoelectric materials...Ch. 30 - (II) (a) Determine a formula for the average power...Ch. 30 - (II) (a) Show that oscillation of charge Q on the...Ch. 30 - (II) A resonant circuit using a 220-nF capacitor...Ch. 30 - Prob. 70P Ch. 30 - Prob. 71GP Ch. 30 - Prob. 72GP Ch. 30 - At time t = 0, the switch in the circuit shown in...Ch. 30 - Prob. 74GP Ch. 30 - Prob. 75GP Ch. 30 - Assuming the Earths magnetic field averages about...Ch. 30 - (a) For an underdamped LRC circuit, determine a...Ch. 30 - An electronic device needs to be protected against...Ch. 30 - Prob. 79GP Ch. 30 - Prob. 80GP Ch. 30 - An ac voltage source V=V0sin(t+90) is connected...Ch. 30 - A circuit contains two elements, but it is not...Ch. 30 - A 3.5-k resistor in series with a 440-mH inductor...Ch. 30 - (a) What is the rms current in on RC circuit if R...Ch. 30 - An inductance coil draws 2.5 A de when connected...Ch. 30 - The Q-value of a resonance circuit can be defined...Ch. 30 - Show that the fraction of electromagnetic energy...Ch. 30 - In a series LRC circuit, the inductance is 33mH,...Ch. 30 - Prob. 89GP Ch. 30 - A voltage V = 0.95 sin 754t is applied to an LRC...Ch. 30 - Filler circuit. Figure 3033 shows a simple filler...Ch. 30 - Show that if the inductor L in the filter circuit...Ch. 30 - A resistor R, capacitor C, and inductor L are...Ch. 30 - Suppose a series LRC circuit has two resisiors, R1...Ch. 30 - Prob. 95GP Ch. 30 - Prob. 96GP Ch. 30 - You have a small electromagnet that consumes 350 W...Ch. 30 - An inductor L in series with a resistor R, driven...Ch. 30 - In a certain LRC series circuit, when the ac...Ch. 30 - Prob. 100GP Ch. 30 - Prob. 101GP Ch. 30 - For the circuit shown in Fig. 3038, show that if...Ch. 30 - (II) The RC circuit shown in Fig. 3039 is called a...Ch. 30 - (II) The RC circuit shown in Fig. 3040 is called a...Ch. 30 - (III) Write a computer program or use a...

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An electronic device needs to be protected against sudden surges in current. In particular, after the power is turned on the current should rise 10 no more than 7.5 mA in the first 75 μ s. The device has resistance 150 Ω and is designed to operate at 33 mA. How would you protect this device?

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Chapter 30 Solutions

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