field 38.0 cm away from a long, straight wire carrying current 4.00 A is 2110 nT. (a) At what distance is it 211 nT? 03 x How does the magnetic field depend on the distance from the wire? cm The magnetic (b) At one instant, the two conductors in a long household extension cord carry equal 4.00-A currents in opposite directions. The two wires are 3.00 mm apart. Find the magnetic field 38.0 cm away from the middle of the straight cord, in the plane of the two wires. 0 x If the two wires were directly on top of each other the field would be zero, but that is not the case here. nT (c) At what distance is it one-tenth as large? 30 x You will need to do a little algebra to get this result. Try to work out a general equation for the magnetic field as a function of r and d (the separation between the wires). cm

field 38.0 cm away from a long, straight wire carrying current 4.00 A is 2110 nT. (a) At what distance is it 211 nT? 03 x How does the magnetic field depend on the distance from the wire? cm The magnetic (b) At one instant, the two conductors in a long household extension cord carry equal 4.00-A currents in opposite directions. The two wires are 3.00 mm apart. Find the magnetic field 38.0 cm away from the middle of the straight cord, in the plane of the two wires. 0 x If the two wires were directly on top of each other the field would be zero, but that is not the case here. nT (c) At what distance is it one-tenth as large? 30 x You will need to do a little algebra to get this result. Try to work out a general equation for the magnetic field as a function of r and d (the separation between the wires). cm

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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 magnetic field 38.0 cm away from a long, straight wire carrying current 4.00 A is 2110 nT.
(a) At what distance is it 211 nT?
03
X
How does the magnetic field depend on the distance from the wire? cm
(b) At one instant, the two conductors in a long household extension cord carry equal 4.00-A currents in opposite directions. The two wires are 3.00 mm apart. Find the magnetic field 38.0 cm away from
the middle of the straight cord, in the plane of the two wires.
0
X
If the two wires were directly on top of each other the field would be zero, but that is not the case here. nT
(c) At what distance is it one-tenth as large?
30
X
You will need to do a little algebra to get this result. Try to work out a general equation for the magnetic field as a function of r and d (the separation between the wires). cm
(d) The center wire in a coaxial cable carries current 4.00 A in one direction, and the sheath around it carries current 4.00 A in the opposite direction. What magnetic field does the cable create at points
outside the cables?
0
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