Physics for Scientists and Engineers: Foundations and Connections
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Textbook Question
Chapter 32, Problem 1PQ

A constant magnetic field of 0.275 T points through a circular loop of wire with radius 3.50 cm as shown in Figure P32.1.

a. What is the magnetic flux through the loop?

b. Is a current induced in the loop? Explain.

Chapter 32, Problem 1PQ, A constant magnetic field of 0.275 T points through a circular loop of wire with radius 3.50 cm as

FIGURE P32.1

(a)

Expert Solution
Check Mark
To determine

The magnetic flux through the loop.

Answer to Problem 1PQ

The magnetic flux through the loop is 5.29×104Wb.

Explanation of Solution

Write the expression for the magnetic flux through the loop.

    ϕB=BAcosφ                                                                                                      (I)

Here, ϕB is the magnetic flux, B is the magnetic field and φ is the angle between the area vector and the magnetic field.

Write the expression for the area of the loop.

    A=πr2

Here, A is the area of the loop and r is the radius of the loop.

Substitute the above equation in equation (I) to find ϕB.

    ϕB=B(πr2)cosφ

Substitute 0.275T for B, 3.50cm for r and 60° for φ in the above equation to find ϕB.

    ϕB=0.275T×3.14×(3.50cm×102m1cm)2×cos60°=5.29×104Wb

Conclusion:

Thus, the magnetic flux through the loop is 5.29×104Wb.

(b)

Expert Solution
Check Mark
To determine

Whether the current induced in the loop.

Answer to Problem 1PQ

No current is induced in the loop because there is no change in the flux passing through the loop.

Explanation of Solution

Since the magnetic flux linked with the loop is constant, there is no change in the magnetic flux associated with the loop of the wire. So, there is no current induced in the loop.

Conclusion:

Thus, no current is induced in the loop.

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a) A coil with 50 turns of wire is wrapped around a tube with a cross-sectional area of 0.25 m^2. A magnetic field is applied at a right angle at 1.5 T. If the coil is pulled out of the magnetic field in 2 seconds, what emf is induced in the coil? b) If the resistance of the wire is 5.50 $2, what is the current running through the wire?

Chapter 32 Solutions

Physics for Scientists and Engineers: Foundations and Connections

Ch. 32 - Prob. 2PQCh. 32 - Prob. 3PQCh. 32 - Prob. 4PQCh. 32 - Prob. 5PQCh. 32 - Figure P32.6 shows three situations involving a...Ch. 32 - A rectangular loop of length L and width W is...Ch. 32 - The magnetic field through a square loop of wire...Ch. 32 - Prob. 9PQCh. 32 - Prob. 10PQCh. 32 - Suppose a uniform magnetic field is perpendicular...Ch. 32 - Prob. 12PQCh. 32 - A square conducting loop with side length a = 1.25...Ch. 32 - A The magnetic field in a region of space is given...Ch. 32 - A The magnetic field in a region of space is given...Ch. 32 - Prob. 16PQCh. 32 - Prob. 17PQCh. 32 - Prob. 18PQCh. 32 - A square loop with side length 5.00 cm is on a...Ch. 32 - A thin copper rod of length L rotates with...Ch. 32 - Figure P32.21 shows a circular conducting loop...Ch. 32 - Prob. 22PQCh. 32 - A square loop with side length L, mass M, and...Ch. 32 - Prob. 24PQCh. 32 - Prob. 25PQCh. 32 - Prob. 26PQCh. 32 - Prob. 27PQCh. 32 - A solenoid of area Asol produces a uniform...Ch. 32 - Two circular conductors are perpendicular to each...Ch. 32 - Two circular conducting loops labeled A and B are...Ch. 32 - Prob. 31PQCh. 32 - Prob. 32PQCh. 32 - Prob. 33PQCh. 32 - Prob. 34PQCh. 32 - Prob. 35PQCh. 32 - Find an expression for the current in the slide...Ch. 32 - The slide generator in Figure 32.14 (page 1020) is...Ch. 32 - Prob. 38PQCh. 32 - A thin conducting bar (60.0 cm long) aligned in...Ch. 32 - A stiff spring with a spring constant of 1200.0...Ch. 32 - A generator spinning at a rate of 1.20 103...Ch. 32 - Suppose you have a simple homemade AC generator...Ch. 32 - Prob. 43PQCh. 32 - Prob. 44PQCh. 32 - Prob. 45PQCh. 32 - Prob. 46PQCh. 32 - A square coil with a side length of 12.0 cm and 34...Ch. 32 - Prob. 48PQCh. 32 - Prob. 49PQCh. 32 - Prob. 50PQCh. 32 - Prob. 51PQCh. 32 - Prob. 52PQCh. 32 - Prob. 53PQCh. 32 - Prob. 54PQCh. 32 - Prob. 55PQCh. 32 - Prob. 56PQCh. 32 - Prob. 57PQCh. 32 - A step-down transformer has 65 turns in its...Ch. 32 - Prob. 59PQCh. 32 - Prob. 60PQCh. 32 - Prob. 61PQCh. 32 - Prob. 62PQCh. 32 - Prob. 63PQCh. 32 - A bar magnet is dropped through a loop of wire as...Ch. 32 - Prob. 65PQCh. 32 - Prob. 66PQCh. 32 - A circular coil with 75 turns and radius 12.0 cm...Ch. 32 - Each of the three situations in Figure P32.68...Ch. 32 - A square loop with sides 1.0 m in length is placed...Ch. 32 - Prob. 70PQCh. 32 - Two frictionless conducting rails separated by l =...Ch. 32 - Imagine a glorious day after youve finished...Ch. 32 - Prob. 73PQCh. 32 - A Figure P32.74 shows an N-turn rectangular coil...Ch. 32 - A rectangular conducting loop with dimensions w =...Ch. 32 - Prob. 76PQCh. 32 - A conducting rod is pulled with constant speed v...Ch. 32 - Prob. 78PQCh. 32 - A conducting single-turn circular loop with a...Ch. 32 - A metal rod of mass M and length L is pivoted...
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