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 19SP
To determine
The total charge transferred in 1min, the work done in transferring this charge, and power expended in heating the conductor when a current of
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Suppose 1.67 C of charge passes through the filament of a light bulb in 2.00 seconds. How many electrons pass through the filament
in 5.00 s? Express all numerical values in three significant figures.
The current in the light bulb is:
| =
milliamperes
The total amount of charge passing through the filament int=5.00 s is:
coulombs
Since a single electron has a charge of -1.60 × 10¬19 C, the number of electrons passing through the filament in t=5.00 s is:
N =
x 1019 electrons
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If a current of 5A flows through a conductor with a resistance of 7 ohms for 3 minutes, how many electrons pass through any section of the conductor during this time? (Find the factor x10^21)
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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- If the current carried by a conductor is doubled, what happens to (a) the charge carrier density, (b) the current density, (c) the electron drift velocity, and (d) the average time interval between collisions?arrow_forwardSuppose 1.67 C of charge passes through the filament of a light bulb in 2.00 seconds. How many electrons pass through the filament in 5.00 s? Express all numerical values in three significant figures. The current in the light bulb is: | = milliamperes The total amount of charge passing through the filament in t=5.00 s is: coulombs Since a single electron has a charge of -1.60 x 10¬19 C, the number of electrons passing through the filament in t=5.00 sis: N= x 1019 electronsarrow_forwardA piece of Nichrome wire has a radius of 5.0x 104 m. It is used in a laboratory to make a heater that dissipates 4.00x102W of power when connected to a voltage source of 150 V. Ignoring the effect of temperature on resistance, estimate the necessary length of wire. Number Unitsarrow_forward
- A 4μF conductor is charged to 400 V and then its plates are joined through a resistance of 1kQ. The heat produced in the resistance is (a) 0.16 J (c) 0.64 J (b) 1.28 J (d) 0.32 Jarrow_forwardSuppose 1.67 C of charge passes through the filament of a light bulb in 2.00 seconds. How many electrons pass through the filament in 5.00 s? Express all numerical values in three significant figures. The current in the light bulb is: milliamperes The total amount of charge passing through the filament in t= 5.00 s is: Q = coulombs Since a single electron has a charge of -1.60 x 10-19 C, the number of electrons passing through the filament in t=5.00 s is: N= x 1019 electronsarrow_forwardA conductor has a cross- sectional area of 2.3x 10 6 m2 and the number of free electrons per unit volume is 8.5 x 1028 electron/m³. When the current is 14.4 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6x 1019 C.arrow_forward
- The resistance of a metal rod with a conductivity 1.6 x 10^5(ohm-cm)^-1 and a length of 6m is measured to be 0.03 ohms. What voltage is required to produce a current of 5.2 Amperes in this rod?arrow_forwardSuppose 1.67 C of charge passes through the filament of a light bulb in 2.00 seconds. How many electrons pass through the filament in 5.00 s? Express all numerical values in three significant figures. The current in the light bulb is: I = ____________ milliamperes The total amount of charge passing through the filament in t = 5.00 s end text is: Q = ____________ coulombs Since a single electron has a charge of -1.60 x 10-19C, the number of electrons passing through the filament in t = 5.00 s end text is: N = ____________ x 1019 electronsarrow_forwardA current of 1.5 A exists in a conductor whose terminals are connected across a potential difference of 100 V. Compute the total charge transferred in one minute.What is the energy used in transferring the charge?What is the power used?arrow_forward
- You have a simple circuit consisting of a battery and a lightbulb (you can imagine that this circuit is contained within a flashlight). If the total potential difference provided by the batteries in this circuit is 6V, and if you measure the current to be 23.04mA, what is the resistance of the light bulb (created by the thin wire which composes the filament) in units of Ohms?arrow_forwardWhat is the value of current if a 1000 C charge flows in a conductor over a period of 5 minutes?arrow_forwardA 340-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,230 A. If the conductor is copper with a free charge density of 8.5 x 1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156 × 107 for the number of seconds in a year.) yrarrow_forward
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