Physics
Electricity and Magnetism
A magnetic rod with length 6.00 cm, radius 3.00 mm,

A magnetic rod with length 6.00 cm, radius 3.00 mm, and (uniform) magnetization 2.70 x 103 A/m

Question:

A magnetic rod with length 6.00 cm, radius 3.00 mm, and (uniform) magnetization 2.70 x 103 A/m can turn about its center like a compass needle. It is placed in a uniform magnetic field B of magnitude 35.0mT, such that the directions of its dipole moment and B make an angle of 68.0°.

(a) What is the magnitude of the torque on the rod due to B?

(b) What is the change in the magnetic potential energy of the rod if the angle changes to 34.0°?

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a Eq 2936 gives T Hrod B sine 2700 Am006 m0003 m0035 ...View the full answer

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Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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Question Posted: Jan 25, 2011 05:18 AM

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