Essential University Physics
4th Edition
ISBN: 9780134988566
Author: Wolfson, Richard
Publisher: Pearson Education,
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 22, Problem 83P
You’re sizing a new electric transmission line, and you can save money with thinner wire. The potential difference between the line and the ground. 60 m below, is 115 kV. The field at the wire surface cannot exceed 25% of the 3-MV/m breakdown field in air. Neglecting charges in the ground itself, what minimum wire diameter do you specify? (Hint: You’ll have to do a numerical calculation.)
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A solid conducting sphere with a 11 cm radius sits inside a hollow conducting sphere witha 13 cm inside radius and 15 cm outside radius. The gap between the conductors is filled with distilled water. If the two conductors are connected across a 12 V battery, then what is the charge on the conductors of the configuration?
The dielectric constant for distilled water is 80.
The voltage across a membrane forming a cell wall is 84.0 mV and the membrane is 8.40 nm thick. What is the electric field strength in volts per meter? (The value is surprisingly large, but correct. Membranes are discussed later in the textbook.) You may assume a uniform E-field.
For this problem, use the usual assumptions such as neglecting fringing effects.
Two large, parallel conducting plates each have surface area 0.5 m2 on a side. The plates are separated by a distance of 0.003 m.
One plate is positively charged and the other is negatively charged but with the same absolute value of charge.
A voltmeter is connected to the plates. The absolute value of the reading is 4000 volts.
Chapter 22 Solutions
Essential University Physics
Ch. 22.1 - What would happen to the potential difference Vab...Ch. 22.1 - (1) A proton (charge e), (2) an alpha particle...Ch. 22.1 - The figure shows three straight paths AB of the...Ch. 22.2 - You measure a potential difference of 50 V between...Ch. 22.2 - The figure shows three paths from infinity to a...Ch. 22.3 - The figure shows cross sections through two...Ch. 22 - Why can a bird perch on a high-voltage power line...Ch. 22 - One proton is accelerated from rest by a uniform...Ch. 22 - Would a free electron move toward higher or lower...Ch. 22 - The electric Field at the center of a uniformly...
Ch. 22 - Must the electric field he zero at any point where...Ch. 22 - Cherry picker trucks for working on power lines...Ch. 22 - Is the potential at the center of a hollow,...Ch. 22 - A solid sphere contains positive charge uniformly...Ch. 22 - Two equal hut opposite charges form a dipole....Ch. 22 - The electric potential in a region increases...Ch. 22 - How much work does it take to move a 50-C charge...Ch. 22 - The potential difference between the two sides of...Ch. 22 - It takes 45 J to move a 15-mC charge from point A...Ch. 22 - Show that 1 V/m is the same as 1 N/C.Ch. 22 - Find the magnitude of the potential difference...Ch. 22 - A charge of 3.1 C moves from the positive to the...Ch. 22 - A proton, an alpha particle (a bare helium...Ch. 22 - The potential difference across a typical cell...Ch. 22 - An electric field is given by E= E0, where E0 is a...Ch. 22 - The classical picture of the hydrogen atom has the...Ch. 22 - The potential at the surface of a 10-cm-radius...Ch. 22 - Youre developing a switch for high-voltage power...Ch. 22 - A 3.5-cm-diameter isolated metal sphere carries...Ch. 22 - In a uniform electric field, equipotential planes...Ch. 22 - Figure 22.22 shows a plot of potential versus...Ch. 22 - figure 22.23 shows some equipotentials in the x-y...Ch. 22 - The electric potential in a region is given by V =...Ch. 22 - Dielectric breakdown of air occurs at fields of 3...Ch. 22 - Youre an automotive engineer working on the...Ch. 22 - A large metal sphere has three times the diameter...Ch. 22 - Example 22.4: A power distribution line in a city...Ch. 22 - Example 22.4: Consider a 2.54-cm-diameter power...Ch. 22 - Example 22.4: Problem 43 of Chapter 20 considers a...Ch. 22 - Example22.4: You’ve got a thin charged rod as...Ch. 22 - Example 22.8: A disk of radius cm carries charge ...Ch. 22 - The potential on the axis of a uniformly charged...Ch. 22 - Example 22.8: Use the result of Problem 61 to show...Ch. 22 - Example 22.8: An annulus like that shown in Fig....Ch. 22 - Two points A and B lie 15 cm apart in a uniform...Ch. 22 - The electric field within a cell membrane is...Ch. 22 - Whats the potential difference between the...Ch. 22 - Prob. 42PCh. 22 - Two Hat metal plates are a distance d apart, where...Ch. 22 - An electron passes point A moving at 6.5 Mm/s. At...Ch. 22 - A 5.0-g object carries 3.8 C. It acquires speed v...Ch. 22 - Points A and B lie 32.0 cm apart on a line...Ch. 22 - A sphere of radius R carries negative charge of...Ch. 22 - Proton-beam therapy can be preferable to X rays...Ch. 22 - A thin spherical shell of radius R carries...Ch. 22 - A solid sphere of radius R carries charge Q...Ch. 22 - Find the potential as a function of position in...Ch. 22 - Your radio station needs a new coaxial cable to...Ch. 22 - The potential difference between the surface of a...Ch. 22 - Three equal charges q form an equilateral triangle...Ch. 22 - A charge +Q lies at the origin and 3Q at x = a....Ch. 22 - Two identical charges q lie on the x-axis at a....Ch. 22 - A dipole of moment p = 2.9 nC m consists of two...Ch. 22 - A thin plastic rod 20 cm long carries 3.2 nC...Ch. 22 - A thin ring of radius R carries charge 3Q...Ch. 22 - The potential at the center of a uniformly charged...Ch. 22 - The annulus shown in Fig. 22.25 carries a uniform...Ch. 22 - The potential in a region is given by V = axy,...Ch. 22 - Use Equation 22.6 to calculate the electric field...Ch. 22 - Use the result of Example 22.6 to determine the...Ch. 22 - The electric potential in a region is given by V =...Ch. 22 - Two metal spheres each 1.0 cm in radius are far...Ch. 22 - Two 5.0-cm-diameter conducting spheres are 8.0 m...Ch. 22 - A 2.0-cm-radius metal sphere carries 75 nC and is...Ch. 22 - A sphere of radius R carries a nonuniform but...Ch. 22 - Prob. 70PCh. 22 - A conducting sphere 15.4 cm in diameter carries...Ch. 22 - INTERPRET Ibis problem deals with the electric...Ch. 22 - The potential on the axis of a uniformly charged...Ch. 22 - A uranium nucleus (mass 238 u, charge 92e) decays,...Ch. 22 - The Taser, an ostensibly nonlethal weapon used by...Ch. 22 - Using the dipole potential at points far from a...Ch. 22 - Measurements of the potential at points on the...Ch. 22 - Find an equation describing the V = 0...Ch. 22 - A disk of radius a carries nonuniform surface...Ch. 22 - An open ended cylinder of radius a and length 2a...Ch. 22 - A line charge extends along the x-axis from L/2 to...Ch. 22 - Repeat Problem 79 for the charge distribution =...Ch. 22 - Youre sizing a new electric transmission line, and...Ch. 22 - bio Standard electrocardiography measures...Ch. 22 - bio Standard electrocardiography measures...Ch. 22 - bio Standard electrocardiography measures...Ch. 22 - bio Standard electrocardiography measures...
Additional Science Textbook Solutions
Find more solutions based on key concepts
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective
Find ae gauge and absolute pressures in be balloon and peanut jar shown Figure 14.12, assuming be manometer con...
University Physics Volume 1
The nuchal ligament is a cord-like structure that runs along the back of the neck and supports much of the head...
Essential University Physics: Volume 1 (3rd Edition)
What gas molecules are primarily responsible for the absorption of each of the following types of light in our ...
Lecture- Tutorials for Introductory Astronomy
Express the unit vectors in terms of (that is, derive Eq. 1.64). Check your answers several ways Also work o...
Introduction to Electrodynamics
26. When striking, the pike, a predatory fish, can accelerate from rest to a speed of 4.0 m/s in 0.11 S.
a. Wh...
College Physics: A Strategic Approach (3rd Edition)
Knowledge Booster
Learn more about
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
- (a) Will the electric field strength between two parallel conducting plates exceed the breakdown strength of dry air, which is 3.00106 V/m, if the plates are separated by 2.00 mm and a potential difference of 5.010V is applied? (b) How close together can the plates be with this applied voltage?arrow_forwardCylindrical conducting surfaces with relative permittivity of 497 are used as plates of a capacitor. It has a thickness of 2.43 mm and a radius of 5.46 cm. What is the energy stored in this capacitor if a voltage of 364 V is applied?arrow_forwardEarth'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 154 V/m and the field is directed vertically down. This field causes singly charged positive ions, at a density of 802 cm-3, to drift downward and singly charged negative ions, at a density of 719 cm-3, to drift upward (see the figure). The measured conductivity of the air in that region is 2.13 × 10-14 (Ω-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.arrow_forward
- A concentric cable has an external diameter of 12mm and the diameter of the conductor is 8mm. a) If the dielectric constant of the insulation used is 3.5, calculate the capacitance per km length (in pF/km) of the cable. b) If a potential difference of 500V is maintained between the conductors, find the value of electric field intensity (in kV/mm) on the surface of the inner conductor.arrow_forwardA coaxial cable with inner radius 0.44 mm and outer radius 1.69 mm has a dielectric for which ϵR = 2.93. If P = 5ax + (-36)ay + (-6)az pC/m2, find Dz in pC/m2.arrow_forwardA switc is closed to connect an uncharged capacitor of capacitance C = 0.25 µF to a battery of pote. tial difforence AV = 12 V. The negative capacitor plate has thickness L = 0.50 cm and face area A = 2.0 × 10¬ª m², and it consists of copper (Cu), in which the density of conduction electrons is n = 8.49 × 10²8 electrons/m³. From what depth d within the plate must electrons move to the plate face as the capacitor becomes charged?arrow_forward
- A parallel plate capacitor with circular faces of diameter 7.2 cm separated with an air gap of 3.3 mm is charged with a 12.0 V emf. What is the electric field strength, in V/m, between the plates?arrow_forwardA silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 min. Silver contains 5.8x1028 free electrons- per cubic meter. What is the magnitude of the drift velocity (in x 10-6 m/s) of the electrons in the wire? (e 1.60 x 10-19C) %3D C E 1.78 2.78 3.36 4.50 5.30 itfen birini seçin: O D ОЕarrow_forwardThe gap between electrodes in a spark plug is 0.06 cm. In order to produce an electric spark in a gasoline-air mixture, the electric field must reach a value of 3.0 x106 N/C. What minimum voltage must be supplied by the ignition circuit when starting the car?arrow_forward
- A coaxial cable has an inside wire with a 1.2 mm radius and an outside conductor with an inside radius 1.4 mm and an outside radius of 1.7 mm. Take the insulator between the conductors to have a dielectric constant of 8.30. If it is connected across a 95 V de source then what is the energy per length (E/L) on each conductorarrow_forwardA coaxial cable used in a transmission line has an inner radius of 0.085 mm and an outer radius of 0.54 mm. Calculate the capacitance per meter for the cable. Assume that the space between the conductors is filled with a material with a dielectric constant of 3.5.arrow_forwardMembrane walls of living cells have surprisingly large electric fields across them due to separation of ions. (Membranes are discussed in some detail in Nerve Conduction—Electrocardiograms.) What is the voltage (in mV) across an 8.60 nm thick membrane if the electric field strength across it is 5.60 MV/m? You may assume a uniform electric field.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Electric Fields: Crash Course Physics #26; Author: CrashCourse;https://www.youtube.com/watch?v=mdulzEfQXDE;License: Standard YouTube License, CC-BY