Two long, parallel wires carry currents of I, = 2.55 A and I, = 4.90 A in the directions indicated in the figure below, where d = 18.0 cm. (Take the positive x direction to be to the right.) (a) Find the magnitude and direction of the magnetic field at a point midway between the wires. magnitude direction • counterclockwise from the +x axis (b) Find the magnitude and direction of the magnetic field at point P, located d = 18.0 cm above the wire carrying the 4.90-A current. magnitude direction ° counterclockwise from the +x axis

Two long, parallel wires carry currents of I, = 2.55 A and I, = 4.90 A in the directions indicated in the figure below, where d = 18.0 cm. (Take the positive x direction to be to the right.) (a) Find the magnitude and direction of the magnetic field at a point midway between the wires. magnitude direction • counterclockwise from the +x axis (b) Find the magnitude and direction of the magnetic field at point P, located d = 18.0 cm above the wire carrying the 4.90-A current. magnitude direction ° counterclockwise from the +x axis

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Magnetic Forces And Magnetic Fields

Section: Chapter Questions

Problem 45P

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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

Two long, parallel wires carry currents of I = 2.55 A and I, = 4.90 A in the directions indicated in the figure below, where d = 18.0 cm. (Take the positive x direction to be to the right.)
I2
(a) Find the magnitude and direction of the magnetic field at a point midway between the wires.
magnitude
direction
° counterclockwise from the +x axis
(b) Find the magnitude and direction of the magnetic field at point P, located d = 18.0 cm above the wire carrying the 4.90-A current.
magnitude
direction
counterclockwise from the +x axis

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