University Physics Volume 2
18th Edition
ISBN: 9781938168161
Author: OpenStax
Publisher: OpenStax
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Textbook Question
Chapter 11, Problem 105CP
In a region a non-uniform magnetic field exists such that
Constant. At some time t, a wire of length L is carrying a current I is located along the x-axis from origin to x = L. Find the magnetic force on the wine at this instant in time.
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In a region a non-uniform magnetic field exists such that Bx = 0, By = 0, and Bz = ax, where a is a constant. At some time t, a wire of length L is carrying a current I is located along the x-axis from origin to x = L. Find the magnetic force on the wire at this instant in time.
An infinitely long current carrying wire carries steady current out of the page. A
particle of charge Q is located at a distance d directly above the wire and is launched
with speed vo. Determine directions such that the particle experiences zero magnetic
force.
The magnetic force dFg on a infinitesimal segment of current I is
dFs = I dEx B
Where di is the displacement vector of the infinitesimal current segment. The
total magnetic force on a finite current segment is
F = 1J (dL x B)
1. If the magnetic field is uniform in space the magnetic force on current
simplifies to FB = {(x5). What is vector in this expression? Choose
one.
is the length of the current segment
is the vector from the point where the current enters the uniform field to the point where the current leaves
the uniform field.
a. What is the magnetic force on the portions of the wire to the left of the
dashed line?
•
is the current.
2. The magnetic field is zero to the left of the dashed line. The magnetic field to the right of the dashed line is uniform
outwards. A current carrying wire goes through the region as shown.
b. What is the magnetic force on the bottom wire segment? Write answer
in component vector form.
c. What is the magnetic force on the slanted wire segment?…
Chapter 11 Solutions
University Physics Volume 2
Ch. 11 - Check Your Understanding Repeat the previous...Ch. 11 - Check Your Understanding A uniform magnetic field...Ch. 11 - Check Your Understanding A straight, flexible...Ch. 11 - Check Your Understanding In what orientation would...Ch. 11 - Check Your Understanding A Hall people consists of...Ch. 11 - Check Your Understanding A cyclotron is to be...Ch. 11 - Discuss the similarities and differences between...Ch. 11 - (a) Is it possible for the magnetic force on a...Ch. 11 - At a given instant, an electron and a proton are...Ch. 11 - Does increasing the magnitude of a uniform...
Ch. 11 - An electron passes through a magnetic field...Ch. 11 - If a charged particle moves in a straight line,...Ch. 11 - How could you determine which pole of an...Ch. 11 - Describe the error that results from accidently...Ch. 11 - Considering the magnetic force law, are the...Ch. 11 - Why can a nearby magnet distort a cathode ray tube...Ch. 11 - A magnetic field exerts a force on the moving...Ch. 11 - There are regions where the magnetic field of...Ch. 11 - Hall potentials are much larger for poor...Ch. 11 - Describe the primary function of the electric...Ch. 11 - What is the direction of the magnetic force on a...Ch. 11 - Repeat previous exercise for a negative charge.Ch. 11 - What is the direction of the velocity of a...Ch. 11 - Repeat previous exercise for a positive charge.Ch. 11 - What is the direction of the magnetic field that...Ch. 11 - Repeat previous exercise for a negative charge.Ch. 11 - (a) Aircraft sometimes acquire small static...Ch. 11 - (a) A cosmic ray proton moving toward Earth at...Ch. 11 - An electron moving at 4.00103 m/s in a 1.25-T...Ch. 11 - (a) A physicist performing a sensitive measurement...Ch. 11 - A cosmic-ray electron moves at 7.5 × 106 m/sinches...Ch. 11 - (a) Viewers of Star Trek have heard of an...Ch. 11 - (a) An oxygen-16 ion with a mass of 2.661026 kg...Ch. 11 - An electron in a TV CRT moves with a speed of...Ch. 11 - (a) At what speed will a proton move in a circular...Ch. 11 - (a) What voltage will accelerate electrons to a...Ch. 11 - An alpha-particle ( m=6.641027kg , q=3.21019C )...Ch. 11 - A particle of charge q and mass m is accelerated...Ch. 11 - What is the direction of the magnetic force on the...Ch. 11 - What is the direction of a current that...Ch. 11 - What is the direction of the magnetic field that...Ch. 11 - (a) What is the force per meter on a lightning...Ch. 11 - (a) A dc power line for a light-rail system caries...Ch. 11 - A wire carrying a 30.0-A current passes between...Ch. 11 - (a) By how many percent is the torque of a motor...Ch. 11 - (a) What is the maximum torque on a 150-tum square...Ch. 11 - Find the current through a loop needed to create a...Ch. 11 - Calculate the magnetic field strength needed on a...Ch. 11 - Since the equation for torque on a...Ch. 11 - , (a) At what angle 0 is tlie torque on a current...Ch. 11 - A proton has a magnetic field due to its spin. 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For...Ch. 11 - An electron of kinetic energy 2000 eV passes...Ch. 11 - An alpha-particle (m=6.641027kg,q=3.21019C) moving...Ch. 11 - An electron moving with a velocity...Ch. 11 - At a particular instant an electron is traveling...Ch. 11 - Repeat the calculations of the previous problem...Ch. 11 - What magnetic field is required in order to...Ch. 11 - An electron and a proton move with the same speed...Ch. 11 - A proton and an alpha-particle have the same...Ch. 11 - A singly charged ion takes 2.0 × 10-3 s to...Ch. 11 - A particle moving downward at a speed of 6.0106...Ch. 11 - , A proton, deuteron, and an alpha-particle ae all...Ch. 11 - A singly charged ion is moving in a uniform...Ch. 11 - Two particles have the same linear momentum, but...Ch. 11 - A uniform magnetic field of magnitude is directed...Ch. 11 - An electron moving along the +x -axis at 5.0106m/s...Ch. 11 - (a) A 0.750-m-long section of cable carrying...Ch. 11 - (a)What is the angle between a wire carrying an...Ch. 11 - A 1.0-rn-long segment of wire lies along the...Ch. 11 - A 5.0-m section of a long, straight wire carries a...Ch. 11 - An electromagnet produces a magnetic field of...Ch. 11 - The current loop shown in the accompanying figure...Ch. 11 - A circular coil of radius 5.0 cm is wound with...Ch. 11 - Acircularcoiofwireofradius5.Ocmhas2Otums and...Ch. 11 - A current-carrying coil in a magnetic field...Ch. 11 - A 40-cm by 6.0-cm rectangular current loop carries...Ch. 11 - A circular coil with 200 turns Las a radius of 2.0...Ch. 11 - The current through a circular wire loop of radius...Ch. 11 - A wire of length 1.0 m is wound into a single-turn...Ch. 11 - Consider an electron rotating in a circular orbit...Ch. 11 - The Hall effect is to be used to find the sign of...Ch. 11 - The density of charge carriers far copper is...Ch. 11 - The Hall effect is to be used to find the density...Ch. 11 - Show tliat the Hall voltage across wires made of...Ch. 11 - A velocity selector in a mass spectrometer uses a...Ch. 11 - Find the radius of curvature of the path of a...Ch. 11 - Unreasonable results To construct a non-mechanical...Ch. 11 - Unreasonable results A charged particle having...Ch. 11 - Unreasonable results An inventor wants to generate...Ch. 11 - Unreasonable results Frustrated by the small Hall...Ch. 11 - A particle of charge +q and mass m moves with...Ch. 11 - A proton of speed v=6105m/s enters a region of...Ch. 11 - A particle’s path is bent when it passes through a...Ch. 11 - In a region a non-uniform magnetic field exists...Ch. 11 - A copper rod of mass in and length L is hung from...Ch. 11 - The accompanied figure shows an arrangement for...Ch. 11 - A wire ismade into a circular shape of radius R...Ch. 11 - A long-rigid wire lies along the x-axis and cairns...Ch. 11 - A circular loop of wire of area 10 cm2 carries a...
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