y wire 1 Two long and straight wires carrying current I in opposite directions are placed along the z-axis as shown. What is the direction and magnitude of the L net magnetic field B at point P on the figure? wire 2 I L P

y wire 1 Two long and straight wires carrying current I in opposite directions are placed along the z-axis as shown. What is the direction and magnitude of the L net magnetic field B at point P on the figure? wire 2 I L P

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter30: Sources Of The Magnetic Field

Section: Chapter Questions

Problem 30.10OQ: Consider the two parallel wires carrying currents in opposite directions in Figure OQ3G.9. Due to...

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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

y
wire 1(•
Two long and straight wires carrying current I in
opposite directions are placed along the z-axis as
shown. What is the direction and magnitude of the
L
net magnetic field B at point P on the figure?
wire 2
I
L
P
a. zero
O b. (HoI/4tL)(i – j)
Ο c. (μ1/4πL) (- t +)
o d. (HoI/4nL)(i + j)
O e. (H,I/2nL)(î – f)
O O

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