There are two concentric rings with radii a1 = 6 cm and a2 = 8 cm. Each ring is energized I1 = 10 A and I2 = 20 A in the same direction. What is the direction of the magnetic field strength at the location at point b? (distance b = 10 cm)

There are two concentric rings with radii a1 = 6 cm and a2 = 8 cm. Each ring is energized I1 = 10 A and I2 = 20 A in the same direction. What is the direction of the magnetic field strength at the location at point b? (distance b = 10 cm)

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 47P: A long, solid, cylindrical conductor of radius 3.0 cm carries a current of 50 A distributed...

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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.

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