Physics for Scientists and Engineers, Technology Update, Hybrid Edition (with Enhanced WebAssign Multi-Term LOE Printed Access Card for Physics)
9th Edition
ISBN: 9781305116429
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Textbook Question
Chapter 24, Problem 24.2OQ
A coaxial cable consists of a long, straight filament surrounded by a long, coaxial, cylindrical
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4.) The diagram shows the electric field lines of a positively charged conducting sphere of
radius R and charge Q.
A
B
Points A and B are located on the same field line.
A proton is placed at A and released from rest. The magnitude of the work done by the electric field in
moving the proton from A to B is 1.7×10-16 J. Point A is at a distance of 5.0×10-2m from the centre of
the sphere. Point B is at a distance of 1.0×10-1 m from the centre of the sphere.
(a) Explain why the electric potential decreases from A to B. [2]
(b) Draw, on the axes, the variation of electric potential V with distance r from the centre of the
sphere.
R
[2]
(c(i)) Calculate the electric potential difference between points A and B. [1]
(c(ii)) Determine the charge Q of the sphere. [2]
(d) The concept of potential is also used in the context of gravitational fields. Suggest why scientists
developed a common terminology to describe different types of fields. [1]
3.) The graph shows how current I varies with potential difference V across a component X.
904
80-
70-
60-
50-
I/MA
40-
30-
20-
10-
0+
0
0.5
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VIV
Component X and a cell of negligible internal resistance are placed in a circuit.
A variable resistor R is connected in series with component X. The ammeter reads 20mA.
4.0V
4.0V
Component X and the cell are now placed in a potential divider circuit.
(a) Outline why component X is considered non-ohmic. [1]
(b(i)) Determine the resistance of the variable resistor. [3]
(b(ii)) Calculate the power dissipated in the circuit. [1]
(c(i)) State the range of current that the ammeter can measure as the slider S of the potential divider
is moved from Q to P. [1]
(c(ii)) Describe, by reference to your answer for (c)(i), the advantage of the potential divider
arrangement over the arrangement in (b).
1.) Two long parallel current-carrying wires P and Q are separated by 0.10 m. The current in wire P is 5.0 A.
The magnetic force on a length of 0.50 m of wire P due to the current in wire Q is 2.0 × 10-s N.
(a) State and explain the magnitude of the force on a length of 0.50 m of wire Q due to the current in P. [2]
(b) Calculate the current in wire Q. [2]
(c) Another current-carrying wire R is placed parallel to wires P and Q and halfway between them as shown.
wire P
wire R
wire Q
0.05 m
0.05 m
The net magnetic force on wire Q is now zero.
(c.i) State the direction of the current in R, relative to the current in P.[1]
(c.ii) Deduce the current in R. [2]
Chapter 24 Solutions
Physics for Scientists and Engineers, Technology Update, Hybrid Edition (with Enhanced WebAssign Multi-Term LOE Printed Access Card for Physics)
Ch. 24 - Suppose a point charge is located at the center of...Ch. 24 - If the net flux through a gaussian surface is...Ch. 24 - A cubical gaussian surface surrounds a long,...Ch. 24 - A coaxial cable consists of a long, straight...Ch. 24 - In which of the following contexts ran Gausss law...Ch. 24 - A particle with charge q is located inside a...Ch. 24 - Charges of 3.00 nC, -2.00 nC, -7.00 nC, and 1.00...Ch. 24 - A large, metallic, spherical shell has no net...Ch. 24 - Two solid spheres, both of radius 5 cm. carry...Ch. 24 - A uniform electric field of 1.00 N/C is set up by...
Ch. 24 - A solid insulating sphere of radius 5 cm carries...Ch. 24 - A cubical gaussian surface is bisected by a large...Ch. 24 - Rank the electric fluxes through each gaussian...Ch. 24 - Consider an electric field that is uniform in...Ch. 24 - A cubical surface surrounds a point charge q...Ch. 24 - A uniform electric field exists in a region of...Ch. 24 - If the total charge inside a closed surface is...Ch. 24 - Explain why the electric flux through a closed...Ch. 24 - If more electric field lines leave a gaussian...Ch. 24 - A person is placed in a large, hollow, metallic...Ch. 24 - Consider two identical conducting spheres whose...Ch. 24 - A common demonstration involves charging a rubber...Ch. 24 - On the basis of the repulsive nature of the force...Ch. 24 - The Sun is lower in the sky during the winter than...Ch. 24 - A flat surface of area 3.20 m2 is rotated in a...Ch. 24 - A vertical electric field of magnitude 2.00 104...Ch. 24 - A 40.0-cm-diameter circular loop is rotated in a...Ch. 24 - Consider a closed triangular box resting within a...Ch. 24 - An electric field of magnitude 3.50 kN/C is...Ch. 24 - A nonuniform electric field is given by the...Ch. 24 - An uncharged, nonconducting, hollow sphere of...Ch. 24 - Find the net electric flux through the spherical...Ch. 24 - The following charges are located inside a...Ch. 24 - The electric field everywhere on the surface of a...Ch. 24 - Four closed surfaces, S1 through S4 together with...Ch. 24 - A charge of 170 C is at the center of a cube of...Ch. 24 - In the air over a particular region at an altitude...Ch. 24 - A particle with charge of 12.0 C is placed at the...Ch. 24 - (a) Find the net electric flux through the cube...Ch. 24 - (a) A panicle with charge q is located a distance...Ch. 24 - An infinitely long line charge having a uniform...Ch. 24 - Find the net electric flux through (a) the closed...Ch. 24 - A particle with charge Q = 5.00 C is located at...Ch. 24 - A particle with charge Q is located at the center...Ch. 24 - A particle with charge Q is located a small...Ch. 24 - Figure P23.23 represents the top view of a cubic...Ch. 24 - In nuclear fission, a nucleus of uranium-238,...Ch. 24 - The charge per unit length on a long, straight...Ch. 24 - A 10.0-g piece of Styrofoam carries a net charge...Ch. 24 - Determine the magnitude of the electric field at...Ch. 24 - A large, flat, horizontal sheet of charge has a...Ch. 24 - Suppose you fill two rubber balloons with air,...Ch. 24 - Consider a thin, spherical shell of radius 14.0 cm...Ch. 24 - A nonconducting wall carries charge with a uniform...Ch. 24 - A uniformly charged, straight filament 7.00 m in...Ch. 24 - Assume the magnitude of the electric field on each...Ch. 24 - Consider a long, cylindrical charge distribution...Ch. 24 - A cylindrical shell of radius 7.00 cm and length...Ch. 24 - A solid sphere of radius 40.0 cm has a total...Ch. 24 - Review. A particle with a charge of 60.0 nC is...Ch. 24 - A long, straight metal rod has a radius of 5.00 cm...Ch. 24 - Why is the following situation impossible? A solid...Ch. 24 - A solid metallic sphere of radius a carries total...Ch. 24 - A positively charged panicle is at a distance R/2...Ch. 24 - A very large, thin, flat plate of aluminum of area...Ch. 24 - In a certain region of space, the electric field...Ch. 24 - Two identical conducting spheres each having a...Ch. 24 - A square plate of copper with 50.0-cm sides has no...Ch. 24 - A long, straight wire is surrounded by a hollow...Ch. 24 - A thin, square, conducting plate 50.0 cm on a side...Ch. 24 - A solid conducting sphere of radius 2.00 cm has a...Ch. 24 - Consider a plane surface in a uniform electric...Ch. 24 - Find the electric flux through the plane surface...Ch. 24 - A hollow, metallic, spherical shell has exterior...Ch. 24 - A sphere of radius R = 1.00 m surrounds a particle...Ch. 24 - A sphere of radius R surrounds a particle with...Ch. 24 - A very large conducting plate lying in the xy...Ch. 24 - A solid, insulating sphere of radius a has a...Ch. 24 - A solid insulating sphere of radius a = 5.00 cm...Ch. 24 - Two infinite, nonconducting sheets of charge are...Ch. 24 - For the configuration shown in Figure P24.45,...Ch. 24 - An insulating solid sphere of radius a has a...Ch. 24 - A uniformly charged spherical shell with positive...Ch. 24 - An insulating solid sphere of radius a has a...Ch. 24 - A slab of insulating material has a nonuniform...Ch. 24 - Prob. 24.62CPCh. 24 - A dosed surface with dimensions a = b= 0.400 111...Ch. 24 - A sphere of radius 2a is made of a nonconducting...Ch. 24 - A spherically symmetric charge distribution has a...Ch. 24 - A solid insulating sphere of radius R has a...Ch. 24 - An infinitely long insulating cylinder of radius R...Ch. 24 - A particle with charge Q is located on the axis of...Ch. 24 - Review. A slab of insulating material (infinite in...
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