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23 Nov 2019

1.)
A cylindrical permanent magnet has a volume of 195 cm3 and auniform magnetization of 1.0 106 A/m along its axis. The magnet isplaced in a uniform external magnetic field of magnitude 0.39 T.The magnet's magnetization vector is initially at an angle of 30°with the direction of the external field. Find the magnetic torqueexerted on the magnet. ????

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Nelly Stracke
Nelly StrackeLv2
18 May 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

015 (part 1)
An electron is accelerated by a 6.7 kV poten-
tial difference.
The charge on an electron is 1.60218 ×
10−19 C and its mass is 9.10939 × 10−31 kg.
How strong a magnetic field must be expe-
rienced by the electron if its path is a circle of
radius 5.9 cm?
Answer in units of T.

016 (part 2)
The magnetic force on a straight 0.23 m seg-
ment of wire carrying a current of 4.5 A is 1.6
N.
What is the magnitude of the component
of the magnetic field that is perpendicular to
the wire?
Answer in units of T.

017 ( part 3)
A segment of wire carries a current of 61 A
along the x axis from x = −6 m to x = 0 and
then along the z axis from z = 0 to z = 3.1 m.
In this region of space, the magnetic field is
equal to 21 mT in the positive z direction.
What is the magnitude of the force on this
segment of wire?
Answer in units of N.

018 (part 4)
A wire carrying a current 30 A has a length
0.1 m between the pole faces of a magnet at
an angle 60 ◦ (see the figure). The magnetic
field is approximately uniform at 0.5 T. We
ignore the field beyond the pole pieces.


What is the force on the wire?
Answer in units of N.

Figure P19.64 is a setup that can be used to measure magnetic fields. A rectangular coil of wire contains N turns and has a width w. The coil is attached to one arm of a balance and is suspended between the poles of a magnet. The field is uniform and perpendicular to the plane of the coil. The system is first balanced when the current in the coil is zero. When the switch is closed and the coil carries a current I, a mass m must be added to the right side to balance the system. (a) Find an expression for the magnitude of the magnetic field and determine its direction. (b) Why is the result independent of the vertical dimension of the coil? (c) Suppose the coil has 50 turns and a width of 5.0 cm. When the switch is closed, the coil carries a current of 0.30 A, and a mass of 20.0 g must be added to the right side to balance the system. What is the magnitude of the magnetic field? 

Figure P19.64 is a setup that can be used to measure magnetic fields. A rectangular coil of wire contains N turns and has a width w. The coil is attached to one arm of a balance and is suspended between the poles of a magnet. The field is uniform and perpendicular to the plane of the coil. The system is first balanced when the current in the coil is zero. When the switch is closed and the coil carries a current I, a mass m must be added to the right side to balance the system. (a) Find an expression for the magnitude of the magnetic field and determine its direction. (b) Why is the result independent of the vertical dimension of the coil? (c) Suppose the coil has 50 turns and a width of 5.0 cm. When the switch is closed, the coil carries a current of 0.30 A, and a mass of 20.0 g must be added to the right side to balance the system. What is the magnitude of the magnetic field? 

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