• The area of a 120-turn coil oriented with its plane perpendicularto a 0.33-T magnetic field is 0.050 m2. Find the average inducedemf in this coil if the magnetic field reverses its direction in 0.11 s.

• The area of a 120-turn coil oriented with its plane perpendicularto a 0.33-T magnetic field is 0.050 m2. Find the average inducedemf in this coil if the magnetic field reverses its direction in 0.11 s.

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 5CQ

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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.

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• The area of a 120-turn coil oriented with its plane perpendicular
to a 0.33-T magnetic field is 0.050 m2. Find the average induced
emf in this coil if the magnetic field reverses its direction in 0.11 s.

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