Physics for Scientists and Engineers With Modern Physics
9th Edition
ISBN: 9781133953982
Author: SERWAY, Raymond A./
Publisher: Cengage Learning
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Chapter 27, Problem 3CQ
To determine
The conclusion about the conductor in the given situation.
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A potential difference of 0.8 V is maintained between
the ends of a metal wire of length 1.0 m. The number
density of free electrons in the metal is 8.0 × 1028
per m' and the electrical conductivity of the metal is
6.4 x 10' 2 ml. Find the drift speed of electrons.
potential difference of 100 V is applied across a conductor of length 50cm. Calculate the drift velocity of electrons if the electron mobility is 9 × 10-5 m2V-1s-1.
a) 0.001 ms-1
b) 1.800 ms-1
c) 0.018 ms-1
d) 0.180 ms-1
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If the magnitude of the drift velocity of free electrons in a copper wire is 8.56 x 10* m/s, what is the electric field in the conductor?
V/m
Chapter 27 Solutions
Physics for Scientists and Engineers With Modern Physics
Ch. 27.1 - Consider positive and negative charges of equal...Ch. 27.2 - Prob. 27.2QQCh. 27.2 - Prob. 27.3QQCh. 27.4 - When does an incandescent lightbulb carry more...Ch. 27.6 - Prob. 27.5QQCh. 27 - Prob. 1OQCh. 27 - Prob. 2OQCh. 27 - Prob. 3OQCh. 27 - Prob. 4OQCh. 27 - Prob. 5OQ
Ch. 27 - Prob. 6OQCh. 27 - Prob. 7OQCh. 27 - Prob. 8OQCh. 27 - Prob. 9OQCh. 27 - Prob. 10OQCh. 27 - Prob. 11OQCh. 27 - Prob. 12OQCh. 27 - Prob. 13OQCh. 27 - Prob. 1CQCh. 27 - Prob. 2CQCh. 27 - Prob. 3CQCh. 27 - Prob. 4CQCh. 27 - Prob. 5CQCh. 27 - Prob. 6CQCh. 27 - Prob. 7CQCh. 27 - Prob. 8CQCh. 27 - Prob. 1PCh. 27 - A small sphere that carries a charge q is whirled...Ch. 27 - Prob. 3PCh. 27 - Prob. 4PCh. 27 - Prob. 5PCh. 27 - Prob. 6PCh. 27 - Prob. 7PCh. 27 - Prob. 8PCh. 27 - The quantity of charge q (in coulombs) that has...Ch. 27 - Prob. 10PCh. 27 - Prob. 11PCh. 27 - Prob. 12PCh. 27 - Prob. 13PCh. 27 - Prob. 14PCh. 27 - A wire 50.0 m long and 2.00 mm in diameter is...Ch. 27 - A 0.900-V potential difference is maintained...Ch. 27 - Prob. 17PCh. 27 - Prob. 18PCh. 27 - Prob. 19PCh. 27 - Prob. 20PCh. 27 - Prob. 21PCh. 27 - Prob. 22PCh. 27 - Prob. 23PCh. 27 - Prob. 24PCh. 27 - Prob. 25PCh. 27 - Prob. 26PCh. 27 - Prob. 27PCh. 27 - While taking photographs in Death Valley on a day...Ch. 27 - Prob. 29PCh. 27 - Prob. 30PCh. 27 - Prob. 31PCh. 27 - Prob. 32PCh. 27 - Prob. 33PCh. 27 - Prob. 34PCh. 27 - At what temperature will aluminum have a...Ch. 27 - Assume that global lightning on the Earth...Ch. 27 - Prob. 37PCh. 27 - Prob. 38PCh. 27 - Prob. 39PCh. 27 - The potential difference across a resting neuron...Ch. 27 - Prob. 41PCh. 27 - Prob. 42PCh. 27 - Prob. 43PCh. 27 - Prob. 44PCh. 27 - Prob. 45PCh. 27 - Prob. 46PCh. 27 - Prob. 47PCh. 27 - Prob. 48PCh. 27 - Prob. 49PCh. 27 - Prob. 50PCh. 27 - Prob. 51PCh. 27 - Prob. 52PCh. 27 - Prob. 53PCh. 27 - Prob. 54PCh. 27 - Prob. 55PCh. 27 - Prob. 56PCh. 27 - Prob. 57APCh. 27 - Prob. 58APCh. 27 - Prob. 59APCh. 27 - Prob. 60APCh. 27 - Prob. 61APCh. 27 - Prob. 62APCh. 27 - Prob. 63APCh. 27 - Review. An office worker uses an immersion heater...Ch. 27 - Prob. 65APCh. 27 - Prob. 66APCh. 27 - Prob. 67APCh. 27 - Prob. 68APCh. 27 - Prob. 69APCh. 27 - Prob. 70APCh. 27 - Prob. 71APCh. 27 - Prob. 72APCh. 27 - Prob. 73APCh. 27 - Prob. 74APCh. 27 - Prob. 75APCh. 27 - Prob. 76APCh. 27 - Review. A parallel-plate capacitor consists of...Ch. 27 - The dielectric material between the plates of a...Ch. 27 - Prob. 79APCh. 27 - Prob. 80APCh. 27 - Prob. 81APCh. 27 - Prob. 82CPCh. 27 - Prob. 83CPCh. 27 - Material with uniform resistivity is formed into...Ch. 27 - Prob. 85CP
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- Two conducting wires A and B of the same length and radius are connected across the same potential difference. Conductor A has twice the resistivity of conductor B. What is the ratio of the power delivered to A to the power delivered to B? (a) 2 (b) 2 (c) 1 (d) 12 (e)12arrow_forwardWe have a copper conductor, length l = 1m and circular section of diameter d = 4mm a) Calculate the resistance of the conductor between its ends. b) If a current of 1 amp flows through said conductor: I) Calculate the drag speed of the electrons. II) calculate the number of electrons per second that cross the conductor section. Data: resistivity of copper PCu = 1.7 × 10-8 -8 ampere m: numerical density of charge carriers [nCu] = 8.5 × 1028 atoms m-3: resistivity of aluminum p Al = 2.8 × 10-8 ampere m elemental load = 1.6x10-19 Carrow_forwardAn independent and constant current source is supplying 0.6 ampere to a uniform copper conductor with length 40 mm, inner radius 7 mm, and outer diameter 20 mm. If the resistivity and the electron concentration of the conductor are 2.4 x 10-8 ohm-meter and 6.4 x 1024 electrons per cubic meter, respectively: a. The drift velocity in the conductor; b. The voltage across the conductor;arrow_forward
- When a voltage is applied to a conductor, the current that flows is limited by resistance. Which of these factors affects the resistance? Check all that apply. The size of the current, that is, the more current the more resistance there is. The collision of electrons with atoms and the resulting scattering from their direction of movement. The properties of the conducting material, perhaps given as an empirical resistivity. The length of the conductor. The limited cross-sectional area of the conductor.arrow_forwardDetermine the total charge entering a terminal between t = 1s and t = 2s if the current passing the terminal is i = (5t? – 2t)A.arrow_forwardA hollow conducting cylinder has a length,and inner and outer radii . It is made of a material with resistivity.A potential difference is set up between the inner and outer surfaces of the cylinder. Calculate the resistance of the cylinder.arrow_forward
- Earth's lower atmosphere contains negative and positive ions that are produced by radioactive elements in the soil and cosmic rays from space. In a certain region, the atmospheric electric field strength is 174 V/m and the field is directed vertically down. This field causes singly charged positive ions, at a density of 868 cm³, to drift downward and singly charged negative ions, at a density of 624 cm3, to drift upward (see the figure). The measured conductivity of the air in that region is 3.45 x 10-14 (0-m)-¹. Calculate (a) the magnitude of the current density and (b) the ion drift speed, assumed to be the same for positive and negative ions. (a) Number i (b) Number Units Unitsarrow_forwardA certain resistor has a current of 1.8 A when a potential difference of 120 V exists across the resistor. a) What is the resistance of the resistor? b) If the potential difference is only 50 V, what current will flow in the resistor?arrow_forwardElectric field through a copper wire is found to be 0.18 V/m. If the copper wire has 8.46x10²8 electrons per m³ and a conductivity of 1.7×10 m, estimate the drift velocity of the electrons.arrow_forward
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