The latest specs you have been give is for a solenoid that will be operated by a 1,000 V power supply. The length of solenoid (in order to work for their application) must be exactly ℓ = 22.0 cm.   A cylindrical core will be placed inside the solenoid with a radius of  rs = 1.40 cm  (luckily, this core has the same permeability of free space as air does).   The largest possible magnetic field must be able to be created inside the solenoid, but the thinnest copper wires that the Asia allow you to use are AWG 36 (which corresponds to a wire diameter of  dw = 0.127 mm. ).   What is the maximum magnitude of the magnetic field (in T) that can be created in the solenoid? (Note: the re

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Q: a magnetic field

A: 0.0128 T

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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.