Answered: of 80 cm. An external magnetic field of…

of 80 cm. An external magnetic field of 2.0 T is directed so that the angle between the field and the plane of the loop is 20°.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 25P: A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in...

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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.

Question

A current of 12.6 A is
maintained in a single circular
loop having a circumference
of 80 cm. An external
magnetic field of 2.0 T is
directed so that the angle
between the field and the
plane of the loop is 20°.
Determine the magnitude of
the torque (in units of N.m)
exerted on the loop by the
magnetic forces.
Select one:
A. 0.85
B. 0.44
C. 0.99
O D. 1.21
E. 1.33

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