Physics Solutions Manual

Chapter 24 continued
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■ Figure 24-25
Move to the right. Unlike poles attract.
61. Refer to Figure 24-26 to answer the following
questions.
■ Figure 24-26
a. Where are the poles?
4 and 2, by definition
b. Where is the north pole?
2, by definition and field direction
c. Where is the south pole?
4, by definition and field direction
62. Figure 24-27 shows the response of a compass
in two different positions near a magnet.
Where is the south pole of the magnet located?
■ Figure 24-27
At the right end, unlike poles attract.
63. A wire that is 1.50 m long and carrying a
current of 10.0 A is at right angles to a uniform
magnetic field. The force acting on the
wire is 0.60 N. What is the strength of the
magnetic field?
F ILB
F
B
IL
0.60
N
0.040 N/Am
(10.0 A)(
1.50
m)
0.040 T
N
3
S
1
4 2
N
64. A conventional current flows through a
wire, as shown in Figure 24-28. Copy the
wire segment and sketch the magnetic field
that the current generates.
■ Figure 24-28
65. The current is coming straight out of the
page in Figure 24-29. Copy the figure and
sketch the magnetic field that the current
generates.
■ Figure 24-29
66. Figure 24-30 shows the end view of an electromagnet
with current flowing through it.
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■ Figure 24-30
492 Solutions Manual Physics: Principles and Problems
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