12. A wire consists of a half circle whose ends extend perpendicularly to the circle as shown. It current I flows downward through the wire, what is the magnitude of the magnetic field at the center of the circle? Does it point into or out of the page?

12. A wire consists of a half circle whose ends extend perpendicularly to the circle as shown. It current I flows downward through the wire, what is the magnitude of the magnetic field at the center of the circle? Does it point into or out of the page?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Magnetic Forces And Magnetic Fields

Section: Chapter Questions

Problem 21P

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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

12. A wire consists of a half circle whose ends extend perpendicularly to the circle as shown.
If current | flows downward through the wire, what is the magnitude of the magnetic
field at the center of the circle? Does it point into or out of the page?
Out of
the page
NTO The page

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