## Problem StatementA long cylindrical wire has a radius \( R \) and a uniform current density \( J \). Use Ampere’s law to:### a) Calculate the magnetic field at a point inside the wire.### b) Calculate the magnetic field at a point outside the wire. *(Obviously the current density outside the wire is zero, but the B field is not!)*

Amperes circuital states that the line integral of magnetic field induction B→ around any closed…

Answered: 2. A long cylindrical wire has a radius…

2. A long cylindrical wire has a radius R and a uniform current density J. In terms of J, Use Ampere's law to... a) Calculate the magnetic field at a point inside the wire.

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

## Problem Statement

A long cylindrical wire has a radius \( R \) and a uniform current density \( J \). Use Ampere’s law to:

### a) Calculate the magnetic field at a point inside the wire.

### b) Calculate the magnetic field at a point outside the wire.
*(Obviously the current density outside the wire is zero, but the B field is not!)*

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