A point charge Q moves on the x-axis in the positive direction with a speed of 280 m/s. A point P is on the y-axis at y=+70 mm. The magnetic field produced at the point P, as the charge moves through the origin, is equal to 0.3 µT along the negative z direction. What is the charge Q? *

A point charge Q moves on the x-axis in the positive direction with a speed of 280 m/s. A point P is on the y-axis at y=+70 mm. The magnetic field produced at the point P, as the charge moves through the origin, is equal to 0.3 µT along the negative z direction. What is the charge Q? *

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 30.72CP

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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

A point charge Q moves on the x-axis in the positive direction with a speed of 280 m/s. A
point P is on the y-axis at y=+70 mm. The magnetic field produced at the point P, as the
charge moves through the origin, is equal to 0.3 µT along the negative z direction. What is the
charge Q? *
(µ0 = 4x × 10-7 T•m/A)
4r × 10-7 T• m/A)
-53 μC
+53 μC
-39 μC
+39 μC
+26 μC

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