22.A hunk of iron is shown to not have any magnetism associatedwith it when a student tries to suspend iron nails from it.Subsequently, a large electromagnet lifts the hunk of iron into theair. Once the hunk of iron is removed from the electromagnet thestudent then suspends iron nails from it. Which of the followingbest explains this phenomenon?A. The hunk of iron maintained a magnetic flux after being removedfrom the electromagnet.B. A current, predicted by Lenz's Law and produced by theelectromagnet, caused the hunk of iron to lose its ferromagneticproperties.C. The magnetic domains in the hunk of iron grew and alignedunder the influence of the electromagnet.D. Two of the answers above are true.

The iron can retains magnetic property after it is moved from the magentic field

A hunk of iron is shown to not have any magnetism associated with it when a student tries to suspend iron nails from it. Subsequently, a large electromagnet lifts the hunk of iron into the air. Once the hunk of iron is removed from the electromagnet the student then suspends iron nails from it. Which of the following best explains this phenomenon?

A hunk of iron is shown to not have any magnetism associated with it when a student tries to suspend iron nails from it. Subsequently, a large electromagnet lifts the hunk of iron into the air. Once the hunk of iron is removed from the electromagnet the student then suspends iron nails from it. Which of the following best explains this phenomenon?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

22.
A hunk of iron is shown to not have any magnetism associated
with it when a student tries to suspend iron nails from it.
Subsequently, a large electromagnet lifts the hunk of iron into the
air. Once the hunk of iron is removed from the electromagnet the
student then suspends iron nails from it. Which of the following
best explains this phenomenon?
A. The hunk of iron maintained a magnetic flux after being removed
from the electromagnet.
B. A current, predicted by Lenz's Law and produced by the
electromagnet, caused the hunk of iron to lose its ferromagnetic
properties.
C. The magnetic domains in the hunk of iron grew and aligned
under the influence of the electromagnet.
D. Two of the answers above are true.

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