Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
12th Edition
ISBN: 9781259587399
Author: Eugene Hecht
Publisher: McGraw-Hill Education
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Chapter 27, Problem 17SP
To determine
The resistance of the bulb when lighted by a
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Chapter 27 Solutions
Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
Ch. 27 - 11. If the current supplied to a resistor is...Ch. 27 - 12. A 12.0-V battery supplies 20.0 mA to a...Ch. 27 - 13. A length of wire has a certain current...Ch. 27 - 14. A 12.0-V battery is put across a 100-Ω...Ch. 27 - 15. A 12.0-V car battery supplies 15.0 A to a...Ch. 27 - 16. A resistive heater is labeled 1600 W/120 V....Ch. 27 - Prob. 17SPCh. 27 - 18. A spark of artificial 10.0-MV lightning had...Ch. 27 - Prob. 19SPCh. 27 - 20. An electric motor takes 15.0 A at 110 V....
Ch. 27 - 21. A current of 10 A exists in a line of 0.15 Ω...Ch. 27 - Prob. 22SPCh. 27 - 23. A 25.0-W, 120-V bulb has a cold resistance...Ch. 27 - 24. While carrying a current of 400 A, a...Ch. 27 - 25. How much power does a 60-W/120-V...Ch. 27 - Prob. 26SPCh. 27 - 27. A 10.0-Ω electric heater operates on a 110-V...Ch. 27 - 28. An electric motor, which has 95 percent...Ch. 27 - 29. An electric crane uses 8.0 A at 150 V to...Ch. 27 - Prob. 30SPCh. 27 - 31. Compute the cost per hour at 8.0 / kW • h of...Ch. 27 - 32. Power is transmitted at 80 kV between two...Ch. 27 - 33. A storage battery, of emf 6.4 V and internal...Ch. 27 - 34. A tank containing 200 kg of water was used...
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- Explain why R=R0(1 + a?T) for the temperature variation of the resistance R of an object is not as accurate as P=P0(1 + a?T) which gives the temperature variation of resistivity P.arrow_forwardLightbulb A is marked 25.0 W 120. V, and lightbulb B is marked 100. W 120. V. These labels mean that each lightbulb has its respective power delivered to it when it is connected to a constant 120.-V source. (a) Find the resistance of each lightbulb. (b) During what time interval does 1.00 C pass into lightbulb A? (c) Is this charge different upon its exit versus its entry into the lightbulb? Explain. (d) In what time interval does 1.00 J pass into lightbulb A? (e) By what mechanisms does this energy enter and exit the lightbulb? Explain. (f) Find the cost of running lightbulb A continuously for 30.0 days, assuming the electric company sells its product at 0.110 per kWh.arrow_forwardA child's electronic toy is supplied by three 1.58-V alkaline cells having internal resistances of 0.0200 inseries with a 1.53-V carbon-zinc dry cell having a 0.100- internal resistance. The load resistance is 10.0 . (a) Draw a circuit diagram of the toy and itsbatteries, (b) What current flows? (c) How much power is supplied to the load? (d) What is the internal resistance of the dry cell if it goes bad, resulting in only 0.500 W being supplied to the load?arrow_forward
- A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg • °C, assuming no heat escapes?arrow_forwardA current of 65.9 mA flows through a resistor with a potential difference of P=6.10 V across it. What is the resistance of the resistor?arrow_forwardWhen two identical resistors are connected in series to a 100 V voltage source, the current is measured to be 7 mA. Now suppose the resistors are connected to the voltage in parallel. Find the power supplied by the source. (in W) OA: 2.800 B: 4.060OC: 5.887 OD: 8.536 OE: 1.238×10¹ OF: 1.795×10¹ OG: 2.602×10¹ OH: 3.773x10¹arrow_forward
- A string of 27 identical Christmas tree lightsare connected in series to a 120 V source. Thestring dissipates 75 W.What is the equivalent resistance of thelight string?Answer in units of Ω What is the resistance of a single light?Answer in units of Ω. What power is dissipated in a single light?Answer in units of W One of the bulbs burns out. The lamp has awire that shorts out the bulb filament when itburns out, dropping the resistance of the bulbto zero.What is the resistance R(new) of the lightstring now?Answer in units of Ω. Find the power P(new) dissipated by the stringnow.Answer in units of W.arrow_forwardA toaster has a resistance of 60 Ohms. It draws 2 amps of current from the wall. What is the voltage supplied to the toaster? (V = IR) 30V O 2V O120V 60Varrow_forwardA battery with internal resistance r= 0.16ohm and emf e= 404 V is connected to the ends of resistors Ri= 4ohm and R2 =12 ohm connected in series. Find the total heat energy released over the resistors per unit time. A) 10000J/s B) 4500J/s C) 2000J/s D) 5000J/s E) 3400J/sarrow_forward
- An uncharged condenser in series a 120-volt voltmeter of 10,000 ohms resistance is suddenly connected to a 100 V battery. One second later, the voltmeter reads 60 volts. Determine the rate at which the voltage across the condenser is charging. Answer.: 51e – 0.51t volts/sec.arrow_forwardIn Europe the standard voltage in homes is 220 V instead of the 120 V used in the United States. Therefore a "100 W" European bulb would be intended for use with a 220 V potential difference. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Increasing the resistance. If you bring a "100 W" European bulb home to the United States, what should be its U.S. power rating? Express your answer to three significant figures and include the appropriate units. P = Submit Part B Value I = W X Incorrect; Try Again; 4 attempts remaining Previous Answers Request Answer 國」? How much current will the 100 W European bulb draw in normal use in the United States? Express your answer to three significant figures and include the appropriate units. Value Units ?arrow_forwardYou connect two incandescent light bulbs in series and then connect them to a 110 V outlet. The specs of the light bulbs are 110 V 60 W and 110 V 100 W. What will be power consumption in this setup? Ignore the filament's resistance change due to temperature.arrow_forward
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