Answered: The astronomical object 4U014 + 61 has…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

The astronomical object 4U014 + 61 has the distinction of creating the most powerful magnetic field ever observed.
This object is referred to as a “magnetar” (a subclass of pulsars),
and its magnetic field is 1.3 * 1015 times greater than the Earth’s
magnetic field. (a) Suppose a 2.5-m straight wire carrying a current
of 1.1 A is placed in this magnetic field at an angle of 65° to the field lines. What force does this wire experience? (b) A field this
strong can significantly change the behavior of an atom. To see
this, consider an electron moving with a speed of 2.2 * 106
m>s.
Compare the maximum magnetic force exerted on the electron
to the electric force a proton exerts on an electron in a hydrogen
atom. The radius of the hydrogen atom is 5.29 * 10-11 m

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