The figure shows a circular loop of radius a=2.1 cm concentric with a circular arc of radius b=2.8 cm. The loop and the arc carry currents of I1=I and I2=21, respectively. Find thelength of the arc (in cm) if the magnetic field vanishes (B=0) at the common center O.

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The figure shows a circular loop of radius a=2.1 cm concentric with a circular arc of radius b=2.8 cm. The loop and the are carry currents of I1=I and I2=21, respectively. Find the length of the arc (in cm) if the magnetic field vanishes (B=0) at the common center O.

The figure shows a circular loop of radius a=2.1 cm concentric with a circular arc of radius b=2.8 cm. The loop and the are carry currents of I1=I and I2=21, respectively. Find the length of the arc (in cm) if the magnetic field vanishes (B=0) at the common center O.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 84AP: A circular coil of radius 5.0 cm is wound with five turns and carries a current of 5.0 A. If the...

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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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The figure shows a circular loop of radius a=2.1 cm concentric with a circular arc of radius b=2.8 cm. The loop and the arc carry currents of I1=I and I2=21, respectively. Find the
length of the arc (in cm) if the magnetic field vanishes (B=0) at the common center O.

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