EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Textbook Question
Chapter 25.3, Problem 1CE
Return to the Chapter-Opening Question, page 651, and answer it again now. Try to explain why you may have answered differently the first time.
CHAPTER-OPENING QUESTION–Guess now!
The conductors shown are all made of copper and are at the same temperature. Which conductors would have the greatest resistence to the flow of charge entering from the left? Which would offer the least resistence?
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In a given fluid, positive ions, each with 2 excess protons, move to the right at a steady rate of 1.7 × 1019 ions per minute and negative ions, each with 4 excess electrons, move to the left at a rate of 3.7 × 1019 ions per minute. Determine the current directed to the right. Use the fundamental unit of charge to be C. Determine the current (in amperes) to the right. Express your final answers to four decimal places
Activity 2
Directions: Solve for the given problems. Show your complete solutions. Express your final
answers into 3 significant figures.
1. Silver is composed of 5.8 x 1028 free electrons per cubic meter. If a silver wire with a
diameter of 1.8 mm can allow charges of 360 C to flow in 1 hour,
a. What is the current in the conducting wire?
b. What is the magnitude of the drift velocity of the electrons in the conducting wire?
2. A wire has a radius of 1.90 mm. If the current in the wire is 6.14 A, the drift velocity is 4.86
x 10-5 m/s. What is the concentration of free electrons in the metal?
In a given fluid, positive ions, each with 1 excess protons, move to the right at a steady rate of 1.8 × 1019 ions per minute and negative ions, each with 4 excess electrons, move to the left at a rate of 3.0 × 1019 ions per minute. Determine the current directed to the right. Use the fundamental unit of charge to be C. Determine the current (in amperes) to the right.
NOTE:
Express your final answers accurate to four decimal places; avoid rounding off intermediate values in the solutions to avoid deviation due to rounding-off within the solution.
Chapter 25 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 25.2 - If 1 million electrons per second pass a point in...Ch. 25.2 - Prob. 1BECh. 25.3 - Return to the Chapter-Opening Question, page 651,...Ch. 25.4 - Prob. 1DECh. 25.4 - Prob. 1EECh. 25.4 - Prob. 1FECh. 25.4 - How many 60-W 120-V lightbulbs can operate on a...Ch. 25.6 - Each channel of a stereo receiver is capable of an...Ch. 25 - What quantity is measured by a battery rating...Ch. 25 - When an electric cell is connected to a circuit,...
Ch. 25 - When a flashlight is operated, what is being used...Ch. 25 - One terminal of a car battery is said to be...Ch. 25 - When you turn on a water faucet, the water usually...Ch. 25 - Can a copper wire and an aluminum wire of the same...Ch. 25 - The equation P = V2/R indicates that the power...Ch. 25 - What happens when a lightbulb burns out?Ch. 25 - If the resistance of a small immersion heater (to...Ch. 25 - Prob. 10QCh. 25 - Explain why lightbulbs almost always burn out just...Ch. 25 - Which draws more current, a 100-W lightbulb or a...Ch. 25 - Electric power is transferred over large distances...Ch. 25 - A 15-A fuse blows repeatedly. Why is it dangerous...Ch. 25 - When electric lights are operated on low-frequency...Ch. 25 - Driven by ac power, the same electrons pass back...Ch. 25 - The heating element in a toaster is made of...Ch. 25 - Is current used up in a resistor? Explain.Ch. 25 - Compare the drift velocities and electric currents...Ch. 25 - A voltage V is connected across a wire of length l...Ch. 25 - Why is it more dangerous to turn on an electric...Ch. 25 - Prob. 1PCh. 25 - Prob. 2PCh. 25 - Prob. 3PCh. 25 - Prob. 4PCh. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - Prob. 10PCh. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - (II) A rectangular solid made of carbon has sides...Ch. 25 - (III) A hollow cylindrical resistor with inner...Ch. 25 - Prob. 63GP
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