A solenoid with 475 turns per meter and a diameter of 15.0cm has a magnetic flux through its core of magnitude 1.28 × 10−3Tm2. a) Find the current in this solenoid. b) How would the answer to part a) change if the diameter of the solenoid were doubled?

A solenoid with 475 turns per meter and a diameter of 15.0cm has a magnetic flux through its core of magnitude 1.28 × 10−3Tm2. a) Find the current in this solenoid. b) How would the answer to part a) change if the diameter of the solenoid were doubled?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter31: Gauss’s Law For Magnetism And Ampère’s Law

Section: Chapter Questions

Problem 35PQ

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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 solenoid with 475 turns per meter and a diameter of 15.0cm has a magnetic flux through its core of magnitude 1.28 × 10⁻³Tm².
a) Find the current in this solenoid.
b) How would the answer to part a) change if the diameter of the solenoid were doubled?

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