In the figure, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 18.0 cm. Each wire carries 4.00 A, and the currents are out of the page in wires 1 and 4 and into the page in wires 2 and 3. In unit-vector notation, what is the net magnetic force per meter of wire length on wire 4? Number i î+ i jUnits

In the figure, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 18.0 cm. Each wire carries 4.00 A, and the currents are out of the page in wires 1 and 4 and into the page in wires 2 and 3. In unit-vector notation, what is the net magnetic force per meter of wire length on wire 4? Number i î+ i jUnits

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 67A

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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

Please explain why.

In the figure, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 18.0 cm.
Each wire carries 4.00 A, and the currents are out of the page in wires 1 and 4 and into the page in wires 2 and 3. In unit-vector
notation, what is the net magnetic force per meter of wire length on wire 4?
Number i
î + i
ĵUnits

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