A circular coil 18.0 cm in radius and composed of 145 tightly wound turns carries a current of 2.80 A in the counterclockwise direction, where the plane of the coil makes an angle of 15.0° with the y axis (see figure below). The coil is free to rotate about the z axis and is placed in a region with a uniform magnetic field given by B = 1.20 ↑ T. &= 0 = 15.0° y (a) What is the magnitude of the magnetic torque on the coil? N.m (b) In what direction will the coil rotate? O clockwise as seen from the +z axis O counterclockwise as seen from the +z axis

A circular coil 18.0 cm in radius and composed of 145 tightly wound turns carries a current of 2.80 A in the counterclockwise direction, where the plane of the coil makes an angle of 15.0° with the y axis (see figure below). The coil is free to rotate about the z axis and is placed in a region with a uniform magnetic field given by B = 1.20 ↑ T. &= 0 = 15.0° y (a) What is the magnitude of the magnetic torque on the coil? N.m (b) In what direction will the coil rotate? O clockwise as seen from the +z axis O counterclockwise as seen from the +z axis

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter28: Magnetic Fields

Section: Chapter Questions

Problem 33P: A rectangular coil consists of N = 100 closely wrapped turns and has dimensions a = 0.400 m and b =...

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Concept explainers

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.

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A circular coil 18.0 cm in radius and composed of 145 tightly wound turns carries a current of 2.80 A in the
counterclockwise direction, where the plane of the coil makes an angle of 15.0° with the y axis (see figure below). The coil
is free to rotate about the z axis and is placed in a region with a uniform magnetic field given by B = 1.20 Ĵ T.
X
B
0 = 15.0°
y
(a) What is the magnitude of the magnetic torque on the coil?
N•m
(b) In what direction will the coil rotate?
clockwise as seen from the +z axis
counterclockwise as seen from the +z axis

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