University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Question
Chapter 28, Problem 28.82PP
To determine
The maximum torque in the new solenoid.
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Check out a sample textbook solutionStudents have asked these similar questions
The latest specs you have been give is for a solenoid that will be operated by a 1,000 V power supply. The length of solenoid (in order to work for their application) must be exactly ℓ = 22.0 cm.
A cylindrical core will be placed inside the solenoid with a radius of
rs = 1.40 cm
(luckily, this core has the same permeability of free space as air does).
The largest possible magnetic field must be able to be created inside the solenoid, but the thinnest copper wires that the Asia allow you to use are AWG 36 (which corresponds to a wire diameter of
dw = 0.127 mm.
).
What is the maximum magnitude of the magnetic field (in T) that can be created in the solenoid? (Note: the resistivity of copper is
1.7 ✕ 10−8 Ω · m.
)
T
A single circular loop of radius 0.23 m carries a current of 2.6 A in a magnetic field of 0.95 T.
Find the angle the plane of the loop must make with the field if the torque is to be half its maximum value.
Express your answer using two significant figures.
Q.1 As shown in the figures below . At point P, deduce the magnitude and direction of the
magnetic field.
(a)
(b)
(c)
Q2. Given K,= 300 mA/m at p = 1 cm, K,=-150 mA/m at p = 2 cm, and K,=-210 mA/m at
p = 3 cm all of them along z axis, while an infinite filament also on the z axis carries 20x
mA. Calculate Họ at p = 0.5, 1.5, 2.5, and 3.5 cm
Chapter 28 Solutions
University Physics (14th Edition)
Ch. 28 - A topic of current interest in physics research is...Ch. 28 - Streams of charged particles emitted from the sun...Ch. 28 - The text discussed the magnetic field of an...Ch. 28 - Prob. Q28.4DQCh. 28 - Pairs of conductors carrying current into or out...Ch. 28 - Suppose you have three long, parallel wires...Ch. 28 - In deriving the force on one of the long,...Ch. 28 - Two concentric, coplanar, circular loops of wire...Ch. 28 - A current was sent through a helical coil spring....Ch. 28 - Prob. Q28.10DQ
Ch. 28 - Prob. Q28.11DQCh. 28 - Two very long, parallel wires carry equal currents...Ch. 28 - In the circuit shown in Fig. Q28.13, when switch S...Ch. 28 - A metal ring carries a current that causes a...Ch. 28 - Prob. Q28.15DQCh. 28 - Prob. Q28.16DQCh. 28 - If a magnet is suspended over a container of...Ch. 28 - Prob. Q28.18DQCh. 28 - Prob. Q28.19DQCh. 28 - A cylinder of iron is placed so that it is free to...Ch. 28 - Prob. 28.1ECh. 28 - Prob. 28.2ECh. 28 - An electron moves at 0.100c as shown in Fig....Ch. 28 - An alpha particle (charge +2e) and an electron...Ch. 28 - A 4.80-C charge is moving at a constant speed of...Ch. 28 - Positive point charges q = +8.00 C and q' = +3.00...Ch. 28 - A negative charge q = 3.60 106 C is located at...Ch. 28 - An electron and a proton are each moving at 735...Ch. 28 - A straight wire carries a 10.0-A current (Fig....Ch. 28 - A short current element dl = (0.500 mm) carries a...Ch. 28 - A long, straight wire lies along the z-axis and...Ch. 28 - Two parallel wires are 5.00 cm apart and carry...Ch. 28 - Prob. 28.13ECh. 28 - A square wire loop 10.0 cm on each side carries a...Ch. 28 - The Magnetic Field from a Lightning Bolt....Ch. 28 - A very long, straight horizontal wire carries a...Ch. 28 - Prob. 28.17ECh. 28 - BIO Bacteria Navigation. Certain bacteria (such as...Ch. 28 - (a) How large a current would a very long,...Ch. 28 - Two long, straight wires, one above the other, are...Ch. 28 - A long, straight wire lies along the y-axis and...Ch. 28 - BIO Transmission Lines and Health. Currents in dc...Ch. 28 - Two long, straight, parallel wires, 10.0 cm apart,...Ch. 28 - A rectangular loop with dimensions 4.20 cm by 9.50...Ch. 28 - Four, long, parallel power lines each carry 100-A...Ch. 28 - Four very long, current-carrying wires in the same...Ch. 28 - Two very long insulated wires perpendicular to...Ch. 28 - Three very long parallel wires each carry current...Ch. 28 - Prob. 28.29ECh. 28 - Prob. 28.30ECh. 28 - Lamp Cord Wires. The wires in a household lamp...Ch. 28 - Prob. 28.32ECh. 28 - BIO Currents in the Brain. The magnetic field...Ch. 28 - Calculate the magnitude and direction of the...Ch. 28 - Calculate the magnitude of the magnetic field at...Ch. 28 - A closely wound, circular coil with radius 2.40 cm...Ch. 28 - A single circular current loop 10.0 cm in diameter...Ch. 28 - A closely wound coil has a radius of 6.00 cm and...Ch. 28 - Two concentric circular loops of wire lie on a...Ch. 28 - Figure E28.40 shows, in cross section, several...Ch. 28 - A closed curve encircles several conductors. The...Ch. 28 - As a new electrical technician, you are designing...Ch. 28 - Prob. 28.43ECh. 28 - Prob. 28.44ECh. 28 - A solenoid that is 35 cm long and contains 450...Ch. 28 - A 15.0-cm-long solenoid with radius 0.750 cm is...Ch. 28 - A solenoid is designed to produce a magnetic field...Ch. 28 - A toroidal solenoid has an inner radius of 12.0 cm...Ch. 28 - A magnetic field of 37.2 T has been achieved at...Ch. 28 - An ideal toroidal solenoid (see Example 28.10) has...Ch. 28 - A wooden ring whose mean diameter is 14.0 cm is...Ch. 28 - A toroidal solenoid with 400 turns of wire and a...Ch. 28 - A long solenoid with 60 turns of wire per...Ch. 28 - The current in the windings of a toroidal solenoid...Ch. 28 - A pair of point charges, q = +8.00 C and q' = 5.00...Ch. 28 - At a particular instant, charge q1 = +4.80 106C...Ch. 28 - Two long, parallel transmission lines, 40.0 cm...Ch. 28 - A long, straight wire carries a current of 8.60 A....Ch. 28 - Prob. 28.59PCh. 28 - Prob. 28.60PCh. 28 - An electric bus operates by drawing direct current...Ch. 28 - Figure P28.62 shows an end view of two long,...Ch. 28 - Prob. 28.63PCh. 28 - The long, straight wire AB shown in Fig. P28.64...Ch. 28 - CP Two long, parallel wires hang by 4.00-cm-long...Ch. 28 - The wire semicircles shown in Fig. P28.66 have...Ch. 28 - CALC Helmholtz Coils. Figure P28.67 is a sectional...Ch. 28 - Prob. 28.68PCh. 28 - CALC A long, straight wire with a circular cross...Ch. 28 - CALC The wire shown in Fig. P28.70 is infinitely...Ch. 28 - Prob. 28.71PCh. 28 - Prob. 28.72PCh. 28 - An Infinite Current Sheet. Long, straight...Ch. 28 - Long, straight conductors with square cross...Ch. 28 - A long, straight, solid cylinder, oriented with...Ch. 28 - Prob. 28.76PCh. 28 - DATA You use a teslameter (a Hall-effect device)...Ch. 28 - DATA A pair of long, rigid metal rods, each of...Ch. 28 - CP Two long, straight conducting wires with linear...Ch. 28 - Prob. 28.80CPCh. 28 - BIO STUDYING MAGNETIC BACTERIA. Some types of...Ch. 28 - Prob. 28.82PPCh. 28 - The solenoid is removed from the enclosure and...
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- The angular momentum of a mass distribution where a differential element particle of mass m with velocity v and located at position r is defined in the form L = dmr x v = dvpr x v, p= nm where n is the number of particles per unit volume and m is its mass. If each of the particles has a charge q, with their movement they constitute a current J = nqv Show that the relationship between the magnetic dipole moment and the angular momentum is L m = 2m where the magnetic moment is defined m = dvr x Jarrow_forwardShown in the figure below is a rectangle of wire immersed in a magnetic field. The rectangle has length L = 2 meters, width w = 2 meters, and a resistance of R = 7.97 Ω. The magnetic field varies with time according to the equation:B(t) = 5t2 + 2t5As a result of the varying field, a voltage and current will be established in the loop.Answer all of the following: What is the FORMULA for the rate of change of magnetic field with time, dB dt = What is the FORMULA for the rate of change of magnetic flux with time, dΦB dt = What is the voltage in the circuit at t=1.1 seconds? Volts What is the current in the circuit at this same time? Amps NOTE: Make all formulas POSITIVE (field and flux). Make all values POSITIVE (voltage and current). Format your equations as atn + btm where a,b,n,m are numerical values. Example: 12t2 + 72t3arrow_forwardThe Hall effect can be used to determine the density of mobile electrons in a conductor. A thin strip of the material being investigated is immersed in a magnetic field and oriented so that its surface is perpendicular to the field. In a particular measurement, the magnetic field strength was 0.767 T, the strip was 0.108 mm thick, the current along the strip was 2.87 A, and the Hall voltage between the strip's edges was 2.65 mV. Determine the number density n of mobile electrons (in the order of 1025) in the material. (e = 1.6 x 10-19 C) NOTE: You do not need to include 1025 in your answer. Type your answer...arrow_forward
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