University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Textbook Question
Chapter 25, Problem 25.39E
Consider the circuit of Fig. E25.30. (a) What is the total rate at which electrical energy is dissipated in the 5.0-ft and 9.0-ft resistors? (b) What is the power output of the 16.0-V battery? (c) At what rate is electrical energy being converted to other forms in the 8.0-V battery? (d) Show that the power output of the 16.0-V battery equals the overall rate of consumption of electrical energy in the rest of the circuit.
Figure E25.30
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a) What is the total electrical power loss in the 5.00 ohm and 9.00 ohm resistors?
b) What is the output power of the 16.0 V battery?
c) At what rate is electrical energy converted to other forms of energy in an 8.0 V battery?
d) Show that the rate of conversion of all non-electrical (chemical) energy to electrical energy is equal to the total loss of energy in the circuit.
A 20 m-ohm ammeter is used to measure the current through a 10 ohm resistor with which it is in series.
A.) Compute the percent change in the current through this leg of the circuit, comparing the current drawn with just the resistor in the circuit with the current drawn by both elements, assuming the potential across that part stays the same.
B.) Now assume the current stays the same, calculate the percent change in the potential across this part of the circuit.
Chapter 25 Solutions
University Physics (14th Edition)
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The power rating of a light bulb...Ch. 25 - If a 75-W" bulb (see Problem 25.35) is connected...Ch. 25 - European Light Bulb. In Europe the standard...Ch. 25 - A battery-powered global positioning system (GPS)...Ch. 25 - Consider the circuit of Fig. E25.30. (a) What is...Ch. 25 - BIO Electric Eels. Electric eels generate electric...Ch. 25 - BIO Treatment of Heart Failure. 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