What current I₂ in amperes is needed in the top wire in the figure below to produce a field of zero at the point equidistant from the wires, if the currents in the bottom two wires are both I₁ = 11.8 A into the page and x 19.5 cm? magnitude 30 direction into the page Additional Materiale XA

What current I₂ in amperes is needed in the top wire in the figure below to produce a field of zero at the point equidistant from the wires, if the currents in the bottom two wires are both I₁ = 11.8 A into the page and x 19.5 cm? magnitude 30 direction into the page Additional Materiale XA

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 11.3CYU: Check Your Understanding A straight, flexible length of copper wire is immersed in a magnetic field...

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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

What current I₂ in amperes is needed in the top wire in the figure below to produce a field of zero at the point equidistant from the wires, if the currents in the bottom two wires are both I₁ = 11.8 A into the page
and x = 19.5 cm?
magnitude
direction
30
into the page
Additional Materials
12
XA

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Step 1: Given :-

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Step 2: Resultant field due to both I1 current at equidistant point :-

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Step 3: Calculation of current I2 and it's direction:-

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