Two long parallel wires, located one above the other and separated by a distance of 22 cm, carry currents in the horizontal direction, as shown below. Wire 1 carries a current of 3.7 A to the right. Wire 2 carries a current of unknown magnitude and direction. The net magnetic field at point A (located 11 cm below wire 2) has magnitude 3.5 x 10-7 T and is directed into the page. 3.7 A (a) (b) (c) Wire 1 Wire 2 A! 22 cm 11 cm Find the magnitude and direction of the current in wire 2. (Hint: You may want to begin by finding the magnetic field produced by wire 1 at point A.) Suppose a particle is moving downward (within the plane of the page, away from wire 2) at a speed of 2.5 x 104 m/s as it passes point A. It experiences a leftward magnetic force of magnitude 5.0 x 10-12 N at this point. Determine the charge of the particle (with correct magnitude and sign). (Hint: The answer can be obtained in one or two lines, and does not depend on your result from part (a).) What is the specific direction of the magnetic force exerted by wire 2 on wire 1? Justify your answer briefly.

Two long parallel wires, located one above the other and separated by a distance of 22 cm, carry currents in the horizontal direction, as shown below. Wire 1 carries a current of 3.7 A to the right. Wire 2 carries a current of unknown magnitude and direction. The net magnetic field at point A (located 11 cm below wire 2) has magnitude 3.5 x 10-7 T and is directed into the page. 3.7 A (a) (b) (c) Wire 1 Wire 2 A! 22 cm 11 cm Find the magnitude and direction of the current in wire 2. (Hint: You may want to begin by finding the magnetic field produced by wire 1 at point A.) Suppose a particle is moving downward (within the plane of the page, away from wire 2) at a speed of 2.5 x 104 m/s as it passes point A. It experiences a leftward magnetic force of magnitude 5.0 x 10-12 N at this point. Determine the charge of the particle (with correct magnitude and sign). (Hint: The answer can be obtained in one or two lines, and does not depend on your result from part (a).) What is the specific direction of the magnetic force exerted by wire 2 on wire 1? Justify your answer briefly.

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

Two long parallel wires, located one above the other and separated by a distance of 22 cm, carry
currents in the horizontal direction, as shown below. Wire 1 carries a current of 3.7 A to the
right. Wire 2 carries a current of unknown magnitude and direction. The net magnetic field at
point A (located 11 cm below wire 2) has magnitude 3.5 x 10-7 T and is directed into the page.
(a)
(b)
(c)
Wire 1
Wire 2
3.7 A
A!
22 cm
11 cm
Find the magnitude and direction of the current in wire 2. (Hint: You may want to begin
by finding the magnetic field produced by wire 1 at point A.)
Suppose a particle is moving downward (within the plane of the page, away from wire 2)
at a speed of 2.5 x 104 m/s as it passes point A. It experiences a leftward magnetic force
of magnitude 5.0 x 10-12 N at this point. Determine the charge of the particle (with
correct magnitude and sign). (Hint: The answer can be obtained in one or two lines, and
does not depend on your result from part (a).)
What is the specific direction of the magnetic force exerted by wire 2 on wire 1? Justify
your answer briefly.

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