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 13SP
A length of wire has a certain current passing through it. If the length of the wire sample is doubled, all else kept constant including the current, what happens to the amount of power dissipated by the wire?
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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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Residential building codes typically require the use of 12-gauge copper wire (diameter 0.205 cm) for wiring receptacles. Such circuits carry currents as large as 20.0 A. If a wire of smaller diameter (with a higher gauge number) carried that much current, the wire could rise to a high temperature and cause a fire. (a) Calculate the rate at which internal energy is produced in 1.00 m of 12-gauge copper wire carrying 20.0 A. (b) Repeat the calculation for a 12-gauge aluminum wire. (c) Explain whether a 12-gauge aluminum wire would be as safe as a copper wire.arrow_forwardA device experiences a voltage drop of 4.0 V across it while a current of 4.0 mA flows through it. How much power does it dissipate?arrow_forward6. In the circuit below, the 6.0 2 resistor is consuming energy at the rate of 24.0 W when the current through it flows as shown. Find the current that flows through the ammeter (A). What is the emf (voltage) of the battery, & ? 200 200 1952 17-2 www If 136-2 I 25V 11332 13-2 I 12arrow_forward
- Your cell phone typically consumes about 400 mW of power when you text a friend. If the phone is operated using a lithium-ion battery with a voltage of 3.6 V, what is the current flowing through the cell-phone circuitry under these circumstances?arrow_forwardA 3.6 A current is set up in a circuit for 28 min by a battery with a 5 V emf. By how much is the chemical energy of the battery reduced?arrow_forwardIn a series RC circuit shown, the switch is closed and after a short time, the charge q on the capacitor is 5.2 x 10-5 C. What is the current in the resistor at this time?arrow_forward
- In a circuit, all the power delivered by the battery must be dissipated by the elements to the circuit. This is simply a statement of the conservation of energy. How much energy dissipated depends on the resistance of the element and the voltage across the resistor, or the current through it. The relevant equations for the problems are as follows. For a circuit element, the power dissipated (or generated) is P = IV, where Vand I are the voltage across and current through a circuit element. We know that a resistor obeys OhmA ¢A^A^'s Law V=IR, which means that for a resistor, the power dissipated is P = I*R = V²/R. Consider the following two circuits with identical batteries and re- sistors. А В C R R R RS R If the power dissipated by the resistor in circuit A is P, what is the power dissipated by one resistor in circuit B? If the power dissipated by the resistor in circuit A is P, what is the power dissipated by one resistor in circuit C?arrow_forwardThe emf of a good car 12 V battery is 12.8 V. When it is starting the car, it sources 90 A and the terminal voltage drops to 11 V. Calculate the heat (in terms of joule) that is generated in the battery if it takes 1 second to start the car.arrow_forwardWhat power is dissipated by a 40 Q resistor when a voltage of 6 V is connected across it?arrow_forward
- 9. (A) Consider the circuit in Figure on the right and assume the battery has no internal resistance. Just after the switch is closed, what is the current in the battery? R B) The switch is closed in the figure. After a long time compared to the time constant of the capacitor, what will the current be in the 2-2 resistor? 2Ω 10 %23 HE 1 F 6 Varrow_forwardIs it possible to arrange two resistors so that the equivalent resistance is smaller than the resistance of either of the resistors? If you answer yes, how would you do it?arrow_forwardConsider the circuit shown that has two resistors (each with resistance R = 8.00 Q), a battery with negligible internal resistance (V= 12.0 V), and a lightbulb. If the resistance of the lightbulb is 3.50 Q, calculate the power output of the lightbulb (ie. the rate at which energy is dissipated in the lightbulb). R R 12 W 2.2 W 6.8 W 4.0 Warrow_forward
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Ohm's law Explained; Author: ALL ABOUT ELECTRONICS;https://www.youtube.com/watch?v=PV8CMZZKrB4;License: Standard YouTube License, CC-BY