Approximating a neuron by a straight wire, what electric currentis needed to produce a magnetic field of 1.0 * 10-15 T at a distanceof 5.0 cm?A. 4.0 * 10-22 A B. 7.9 * 10-11 AC. 2.5 * 10-10 A D. 1.0 * 10-7 A

Approximating a neuron by a straight wire, what electric currentis needed to produce a magnetic field of 1.0 * 10-15 T at a distanceof 5.0 cm?A. 4.0 * 10-22 A B. 7.9 * 10-11 AC. 2.5 * 10-10 A D. 1.0 * 10-7 A

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter24: Magnetic Fields

Section: Chapter Questions

Problem 69A

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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

Approximating a neuron by a straight wire, what electric current
is needed to produce a magnetic field of 1.0 * 10-15 T at a distance
of 5.0 cm?
A. 4.0 * 10-22 A B. 7.9 * 10-11 A
C. 2.5 * 10-10 A D. 1.0 * 10-7 A

Flow of electric charges through a conductor.

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