Physical Science (12th Edition), Standalone Book
12th Edition
ISBN: 9781260150544
Author: Bill W. Tillery
Publisher: McGraw Hill Education
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Chapter 6, Problem 2FFA
What are the significant similarities and differences between ac and dc? What determines which is better for a particular application?
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Chapter 6 Solutions
Physical Science (12th Edition), Standalone Book
Ch. 6 - 1. Electrostatic charge results from
a. transfer...Ch. 6 - 2. The unit of electric charge is the
a. volt.
b....Ch. 6 - 3. An electric field describes the condition of...Ch. 6 - 4. A material that has electrons that are free to...Ch. 6 - 5. An example of an electrical insulator is
a....Ch. 6 - 6. The electrical potential difference between two...Ch. 6 - 7. The rate at which an electric current flows...Ch. 6 - 8. The law that predicts the behavior of...Ch. 6 - 9. What type of electric current is produced by...Ch. 6 - 10. The electrical resistance of a conductor is...
Ch. 6 - 11. According to Ohm’s law, what must be greater...Ch. 6 - 12. A kilowatt-hour is a unit of
a. power.
b....Ch. 6 - 13. If you multiply volts by amps, the answer will...Ch. 6 - 14. Units of joules per second are a measure...Ch. 6 - 15. A lodestone is a natural magnet that...Ch. 6 - The north pole of a suspended or floating bar...Ch. 6 - 17. A current-carrying wire always has
a. a...Ch. 6 - 18. Magnetism is produced by
a. an excess of north...Ch. 6 - 19. Earth's magnetic field
a. has undergone many...Ch. 6 - 20. The strength of a magnetic field around a...Ch. 6 - 21. Reverse the direction of a current in a wire,...Ch. 6 - 22. The operation of which of the following...Ch. 6 - Prob. 23ACCh. 6 - When a loop of wire cuts across magnetic field...Ch. 6 - 25. A step-up transformer steps up the
a....Ch. 6 - Prob. 26ACCh. 6 - 27. Electric power companies step up the voltage...Ch. 6 - 28. A solar cell
a. produces electricity...Ch. 6 - 29. Which of the following is most likely to...Ch. 6 - 30. Which of the following units are measures of...Ch. 6 - 31. You are using which description of a current...Ch. 6 - 32. In an electric current, the electrons are...Ch. 6 - 33. In which of the following currents is there no...Ch. 6 - Prob. 34ACCh. 6 - 35. A permanent magnet has magnetic properties...Ch. 6 - 36. A current-carrying wire has a magnetic field...Ch. 6 - 37. When an object acquires a negative charge, it...Ch. 6 - 38. A positive and a negative charge are initially...Ch. 6 - 39. To be operational, a complete electric circuit...Ch. 6 - 40. Which variable is inversely proportional to...Ch. 6 - 41. Which of the following is not considered to...Ch. 6 - 42. A piece of iron can be magnetized or...Ch. 6 - 43. Earth’s magnetic field is believed to...Ch. 6 - 44. Electromagnetic induction takes place...Ch. 6 - 45. The current in the secondary coil of a...Ch. 6 - 46. An electromagnet uses.
a. a magnetic field to...Ch. 6 - 47. A transformer.
a. changes the voltage of a...Ch. 6 - 48. A parallel circuit has
a. wires that are lined...Ch. 6 - 49. In which type of circuit would you expect a...Ch. 6 - 50. In which type of circuit would you expect the...Ch. 6 - 1. Explain why a balloon that has been rubbed...Ch. 6 - 2. Explain what is happening when you walk across...Ch. 6 - 3. Why does a positively or negatively charged...Ch. 6 - 4. Explain how you that it is an electric field,...Ch. 6 - 5. Is a kWh a unit of power or a unit of work?...Ch. 6 - 6. What is the difference between ac and dc?
Ch. 6 - Prob. 7QFTCh. 6 - 8. How is an unmagnetized piece of iron different...Ch. 6 - 9. Explain why the electric utility company...Ch. 6 - 10. Describe how an electric generator is able to...Ch. 6 - Prob. 11QFTCh. 6 - 12. Explain what causes an electron to move toward...Ch. 6 - 1. Explain how the model of electricity as...Ch. 6 - 2. What are the significant similarities and...Ch. 6 - 3. Transformers usually have signs warning,...Ch. 6 - 4. Will a fuel cell be the automobile engine of...Ch. 6 - 5. Analyze the apparent contradiction in the...Ch. 6 - 6. What are the basic similarities and differences...Ch. 6 - 7. What are the advantages and disadvantages of...Ch. 6 - A rubber balloon has become negatively charged...Ch. 6 - Prob. 2PEACh. 6 - Prob. 3PEACh. 6 - Prob. 4PEACh. 6 - Prob. 5PEACh. 6 - Prob. 6PEACh. 6 - Prob. 7PEACh. 6 - Prob. 8PEACh. 6 - Prob. 9PEACh. 6 - Prob. 10PEACh. 6 - Prob. 11PEACh. 6 - Prob. 12PEACh. 6 - Prob. 13PEACh. 6 - Prob. 14PEACh. 6 - Prob. 15PEACh. 6 - Prob. 16PEACh. 6 - Prob. 17PEACh. 6 - 1. An inflated rubber balloon is rubbed with a...Ch. 6 - 2. What is the force between two balloons with a...Ch. 6 - 3. How much energy is available from a 12 V...Ch. 6 - 4. A wire carries a current of 2.0 A. at what rate...Ch. 6 - Prob. 5PEBCh. 6 - 6. There is a current of 0.83 A through a...Ch. 6 - 7. What is the voltage across a 60.0 resistor with...Ch. 6 - 7. What is the voltage across a 60.0 resistor...Ch. 6 - 9. A lightbulb designed to operate in a 120.0 V...Ch. 6 - 10. What is the monthly energy cost of leaving a...Ch. 6 - 11. An electric motor draws a current of 11.5 A in...Ch. 6 - 12. A swimming pool requiring a 2.0 hp motor to...Ch. 6 - 13. Is it possible for two people to...Ch. 6 - 14. A step-up transformer has a primary coil with...Ch. 6 - 15. The step-down transformer in a local...Ch. 6 - 16. A step-down transformer connected to a 120 V...Ch. 6 - 17. What is the power of an 8.0-ohm bulb when...
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- Some surgery is performed with high-voltage electricity passing from a metal scalpel through the tissue being cut. Considering the nature of electric fields at the surface of conductors, why would you expect most of the current to flow from the sharp edge of the scalpel? Do you think high- or low-frequency AC is used?arrow_forward(b) For the dc network shown in Figure Q3 (b), calculate the following: i. The indicated voltage V, and V2 i. The power dissipated in the 3 kQ and 20-k2 resistors ii. The power supplied by the current source. iv. The current through 1 kQ and 3 kQ 1 kQ 3 k2 30 mA 5 kQ 20 k2 Figure Q3 (b) wwarrow_forwardDiscuss the principles behind electric circuits and explain how resistors, capacitors, and inductors affect the flow of current.arrow_forward
- I need help solving this DC Circuit question.arrow_forwardQuestion 8 900 turns 2200 3400 2 3 500 2 turns 3.3 k2 Calculate all voltages and all currents in this transformer circuit, assuming the 3.3 k2 resistor drops 40 volts. 000000000 ell-arrow_forwardA series circuit has 135 watts while a parallel circuit has 15 watts in total. Which circuit has consumed less? Series or Parallel? Explain the reason behind this.arrow_forward
- Rank the transformers on the basis of their rms secondary voltage. Rank from largest to smallest. To rank Items as equivalent, overlap them. View Available Hint(s) largest V, V₂ N 480 V 480 V 4000 turns 4000 tur 2000 turns 2000 turns Vp N N. BANKA PEALE M 120 V 120 V 500 turns 500 turns 2000 turns 2000 turns V₂ 240 V V₂ = 240 V N₂. N N, N₁ - 1000 turns 1000 turns 2000 turns 2000 turns V₂ = 240 V Vp N₂ NP N N₁ Poo 240 V 1000 turns 1000 turns 500 turns 500 turns **** V V N₂ N. N wicht 480 V 480 V 2000 turns 2000 turns 1000 turns 1000 turns Reset smallest Helparrow_forward#1. The capacitor in the figure is initially uncharged and the switch is at position c and not connected to either side of the circuit. At t = 0, the switch is flipped to position a for 20 ms,thenflipped back to position c for 10 ms, then flipped to position b for 20 ms, and finally flipped toposition c again. a) Using the Kirchhoff Voltage Law, write the differential equationsthat describethe circuit between t = 0 –20 ms andt = 30 –50 ms. b) Solve two differential equations you find ina) with appropriate initial condition to find the current through and the voltage across the capacitor as functions of time. c) Sketch the graphs of the current and voltage you find in b) from t = 0 to 60 ms. #2. Now the 40 uF capacitor in the circuit in #1 is replaced with a 0.4 H inductor. The inductor in this circuit is initially uncharged and the switch is at position c and not connected to either side of the circuit. At t = 0, the switch is flipped to position a for 20 ms, then flipped back to…arrow_forwardBased on your understanding of Ohm’s Law, electric power dissipation, and the relationship between length, cross section, and resistance; why do you think it is more efficient to operate electrical power lines at higher voltages? Can you think of any alternative methods for increasing the efficiency of power transmission?arrow_forward
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