The infinite length wires in the figure carry current i1 = i2 = i3 = 5A. If a = 10 cm: a) Determine the BA magnetic field vector that the system will create at point A. b)Determine the force vector acting on the unit length of the wire carrying the current i1.

The infinite length wires in the figure carry current i1 = i2 = i3 = 5A. If a = 10 cm: a) Determine the BA magnetic field vector that the system will create at point A. b)Determine the force vector acting on the unit length of the wire carrying the current i1.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter24: Magnetic Fields

Section: Chapter Questions

Problem 83A

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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

The infinite length wires in the figure carry current i1 = i2 = i3 = 5A. If a = 10 cm:

a) Determine the B_A magnetic field vector that the system will create at point A.

b)Determine the force vector acting on the unit length of the wire carrying the current i1.

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